tag:blogger.com,1999:blog-183220562018-02-19T11:59:58.054-04:00Homeschool Math BlogMath teaching ideas, links, worksheets, reviews, articles, news, Math Mammoth stuff, and more - anything that helps YOU to teach math. ~ Maria MillerMath Mammothhttps://plus.google.com/105961364219775463476noreply@blogger.comBlogger1056125tag:blogger.com,1999:blog-18322056.post-13287549344323756632018-02-19T11:59:00.004-04:002018-02-19T11:59:58.090-04:00Puzzle - fractional parts and fair shareHere are some <a href="https://nrich.maths.org/708">nice puzzles</a> for middle school students.<br /><br /><br /><div class="separator" style="clear: both; text-align: center;"><a href="https://nrich.maths.org/708" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img alt="" border="0" data-original-height="347" data-original-width="1156" height="120" src="https://4.bp.blogspot.com/-VirgL24CABA/Wor0Hdu9AJI/AAAAAAAABnY/rVarG1kqvUUb2ZI6TVCX2XcHIIDtWEhzgCLcBGAs/s400/Fair%2Bshares.png" title="Fair share puzzle" width="400" /></a></div><br />On the surface, students get practice with finding a fractional part of a quantity (such as 1/6 of 24) but the full idea of the puzzles is quite fascinating:<br /><div><br /></div><div><a href="https://nrich.maths.org/708">Fair Shares puzzles</a></div>Math Mammothhttps://plus.google.com/105961364219775463476noreply@blogger.com0tag:blogger.com,1999:blog-18322056.post-36973433694465571472018-01-28T23:17:00.004-04:002018-01-28T23:17:52.484-04:00The different series of Math Mammoth booksSome people feel overwhelmed by the information and all the books offered at Math Mammoth website... and I can understand that.<br /><br /><div class="separator" style="clear: both; text-align: center;"><a href="https://www.mathmammoth.com/books.php" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="485" data-original-width="1490" height="104" src="https://1.bp.blogspot.com/-0_nuRqpRTCQ/Wm6RviY601I/AAAAAAAABm4/5vACywdIKhwVycCdqzK-9PBJAvYrfbQEwCLcBGAs/s320/feature-comparison-chart.png" width="320" /></a></div><br />So, I recently revised <a href="https://www.mathmammoth.com/books.php">the page concerning which books to choose</a> to explain (hopefully) better the different series of books, and to help people choose what they need. :)<br /><br /><br /><div><br /></div>Math Mammothhttps://plus.google.com/105961364219775463476noreply@blogger.com0tag:blogger.com,1999:blog-18322056.post-26292699072702316952018-01-25T13:21:00.001-04:002018-01-25T13:21:02.192-04:00Math Mammoth printed books saleGet Math Mammoth printed books & CDs at 20% off <a href="http://www.rainbowresource.com/prodlist.php?subject=Mathematics/10&category=Math+Mammoth/9820">at Rainbow Resource Center</a>!<br /><br /><div class="separator" style="clear: both; text-align: center;"><a href="https://3.bp.blogspot.com/-nkiH56lZ_t4/WmoR6lP-iQI/AAAAAAAABmo/RuZg7e_ARW0olmAk6D1FkqkyX03hNyewACLcBGAs/s1600/2018_MathMammothSale-1516656435.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="416" data-original-width="742" height="179" src="https://3.bp.blogspot.com/-nkiH56lZ_t4/WmoR6lP-iQI/AAAAAAAABmo/RuZg7e_ARW0olmAk6D1FkqkyX03hNyewACLcBGAs/s320/2018_MathMammothSale-1516656435.jpg" width="320" /></a></div><br />This sale runs till January 29, 2018.Math Mammothhttps://plus.google.com/105961364219775463476noreply@blogger.com0tag:blogger.com,1999:blog-18322056.post-44239523273764262022018-01-25T13:16:00.002-04:002018-01-25T13:16:47.648-04:00Discontented with division?<div class="separator" style="clear: both; text-align: center;"><a href="https://opinionator.blogs.nytimes.com/2010/02/21/division-and-its-discontents/" imageanchor="1" style="clear: right; float: right; margin-bottom: 1em; margin-left: 1em;"><img border="0" data-original-height="826" data-original-width="427" height="200" src="https://2.bp.blogspot.com/-GVXuc8ymvlc/WmoPLAlCUnI/AAAAAAAABmc/-53ZmqIIJ9c0O-PqOqs0dN68NTIgFqBYwCLcBGAs/s200/22strogatz-custom1.jpg" width="103" /></a></div>Enjoy this column by Steven Strogatz titled <a href="https://opinionator.blogs.nytimes.com/2010/02/21/division-and-its-discontents/">Division and Its Discontents</a>.<br /><br /><b>Division</b> "is the place where many students hit the mathematical wall", he says. Division is mathematically the operation that gives us FRACTIONS... because not everything divides evenly. If you try to divide 9 by 4, you will end up with a fractional part in your final answer.<br /><br />Strogatz takes us through a few short stories, and in the end shows us some astonishing facts concerning decimals, which make it seem that everything is turning topsy-turvy! <a href="https://opinionator.blogs.nytimes.com/2010/02/21/division-and-its-discontents/">Enjoyable piece</a> for adults and your middle and high school students alike. :)<br /><br />If you'd like more, this piece is actually a part of a series of columns on <a href="http://topics.nytimes.com/top/opinion/series/steven_strogatz_on_the_elements_of_math/index.html">the Elements of Math</a>:<br /><br /><br />Math Mammothhttps://plus.google.com/105961364219775463476noreply@blogger.com0tag:blogger.com,1999:blog-18322056.post-62104519424723708322018-01-16T10:03:00.000-04:002018-01-16T10:03:36.847-04:00Get Math Mammoth at 25% off!<div class="separator" style="clear: both; text-align: center;"><a href="https://www.mathmammoth.com/books.php" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="500" data-original-width="500" height="320" src="https://3.bp.blogspot.com/-pqNtD8alrgQ/Wl4DbgZN-TI/AAAAAAAABmM/ZcSRWaTYKQ4jX4BYuFujTCooWIQSvg7wACEwYBhgL/s320/Blue-Golden-Green-LightBlue-500x500.jpg" width="320" /></a></div><br />Get <a href="https://www.mathmammoth.com/books.php">Math Mammoth</a> AND <a href="https://www.mathmammoth.com/worksheets/mirl/">Make It Real Learning</a> downloads & CDs at 25% off at MathMammoth.com.<br /><br />Simply use the "Add to cart" buttons at MathMammoth.com website, and then use the coupon code <b>MMJAN18</b>.<br /><br />This promotion is valid till January 31, 2018.Math Mammothhttps://plus.google.com/105961364219775463476noreply@blogger.com0tag:blogger.com,1999:blog-18322056.post-76214246201174194902018-01-08T20:59:00.001-04:002018-01-08T20:59:09.574-04:00Math Mammoth Blue Series - the basicsThis video gives you an overview of Math Mammoth Blue series books:<br /><br /><div align="center"><iframe allow="encrypted-media" allowfullscreen="" frameborder="0" gesture="media" height="315" src="https://www.youtube.com/embed/A_ESbSUqyak?rel=0" width="560"></iframe></div><br />In case you don't know, the <a href="https://www.mathmammoth.com/blue-series.php">Blue Series books</a>, being topical, are perfect for filling in gaps, to provide additional instruction & review on a certain math topic, or to help a student who is seriously behind to catch up.<br /><br />There are nearly 50 different books, which cover all math topics for grades 1-7 -- from addition, subtraction, multiplication, and division to fractions, decimals, percents, geometry, equations, statistics, and so on.<br /><br />Learn more at <a href="https://www.mathmammoth.com/blue-series.php">https://www.mathmammoth.com/blue-series.php</a> !Math Mammothhttps://plus.google.com/105961364219775463476noreply@blogger.com0tag:blogger.com,1999:blog-18322056.post-91559126152674629742018-01-05T10:01:00.000-04:002018-01-05T19:14:33.557-04:00A new prime has been found (2018)The GIMPS project has discovered the largest prime to date... it's a Mersenne prime, which means it is of the form 2^<i>n</i> − 1 for some whole number <i>n.</i> ☺<br /><br />In this case, it is 2^77,232,917 − 1. This number has 23,249,425 digits, and it's nearly one million digits longer than the previous Mersenne prime found.<br /><br /><a href="https://www.sciencealert.com/record-breaking-mersenne-prime-number-23-million-digits-m77232917">Read about the discovery here</a>.<br /><br />The work to find these really large primes is done by running specialized software on many regular computers -- in fact, anyone with a modern computer <a href="https://www.mersenne.org/gettingstarted/">can help</a> in this project!Math Mammothhttps://plus.google.com/105961364219775463476noreply@blogger.com0tag:blogger.com,1999:blog-18322056.post-52070937307958364662018-01-01T10:07:00.002-04:002018-01-01T10:07:43.512-04:002018 Mathematics game<div class="separator" style="clear: both; text-align: center;"><a href="https://4.bp.blogspot.com/-31T5pCOsYUw/WkpAmYQVV5I/AAAAAAAABl4/Hpef4wtYhVY-QX5JiNtAF3EpB1N021cjQCLcBGAs/s1600/calculator-3051724_640.jpg" imageanchor="1" style="clear: right; float: right; margin-bottom: 1em; margin-left: 1em;"><img border="0" data-original-height="426" data-original-width="640" height="213" src="https://4.bp.blogspot.com/-31T5pCOsYUw/WkpAmYQVV5I/AAAAAAAABl4/Hpef4wtYhVY-QX5JiNtAF3EpB1N021cjQCLcBGAs/s320/calculator-3051724_640.jpg" width="320" /></a></div>Welcome to 2018! Here's a FUN mathematical activity you (or your kids) can be entertained by on this first day of the year -- and beyond... some might get involved in it enough to spend a few days on it 😁<br /><br />It's the <a href="https://denisegaskins.com/2018/01/01/2018-mathematics-game-join-the-fun/">2018 Mathematics game</a>! This is a yearly tradition where we try to form all the whole numbers from 1 through 100 using ONLY the digits in the particular year, in this case, 2, 0, 1, and 8.<br /><br />Head on to <a href="https://denisegaskins.com/2018/01/01/2018-mathematics-game-join-the-fun/">https://denisegaskins.com/2018/01/01/2018-mathematics-game-join-the-fun/</a> to read the complete rules.<br /><div><br /></div>Math Mammothhttps://plus.google.com/105961364219775463476noreply@blogger.com0tag:blogger.com,1999:blog-18322056.post-59469387879974091332017-12-29T13:20:00.001-04:002017-12-29T13:20:40.988-04:00Math Mammoth Light Blue series - overview - videoWatch this video to learn the basics of Math Mammoth Light Blue Series - the complete curriculum. You'll learn about what is offered, mastery versus spiral, what kind of review the curriculum supplies, and where <a href="https://www.mathmammoth.com/complete/placement_tests.php">to get started</a>.<br /><br /><br /><div align="center"><iframe allow="encrypted-media" allowfullscreen="" frameborder="0" gesture="media" height="315" src="https://www.youtube.com/embed/TdQMKcm0kKg?rel=0" width="560"></iframe></div><br /><br />Math Mammothhttps://plus.google.com/105961364219775463476noreply@blogger.com0tag:blogger.com,1999:blog-18322056.post-64433717581851999932017-12-20T16:16:00.000-04:002017-12-20T16:16:09.078-04:00Tiling with pentagons - math news<div class="separator" style="clear: both; text-align: center;"><a href="https://www.quantamagazine.org/the-math-problem-with-pentagons-20171211/" imageanchor="1" style="clear: right; float: right; margin-bottom: 1em; margin-left: 1em;"><img border="0" data-original-height="366" data-original-width="650" height="180" src="https://2.bp.blogspot.com/-wHGdqJfEISo/WjrEgt1BuQI/AAAAAAAABlo/ClWDT_X5v5oXM171NSy_P3BjTKLTWoIoQCLcBGAs/s320/TilingProblem_pentagon.jpg" width="320" /></a></div>Here's a <a href="https://www.quantamagazine.org/the-math-problem-with-pentagons-20171211/">well-written article</a> (and easy to read even for laypeople) about a century-old math problem that has finally been solved. It has to do with <b>tiling the plane with PENTAGONS</b>.<br /><br />In a nutshell, there are ONLY 5 families of convex pentagons that tile the plane. The situation is altogether different, and much easier, for rectangles, triangles, and quadrilaterals.<br /><br /><a href="https://www.quantamagazine.org/the-math-problem-with-pentagons-20171211/">The article</a> explores and explains these concepts in an easy-to-follow manner and with wonderful graphics. Tilings are something easy to understand, yet when it came to pentagons, the situation turned to be very complex.<br /><br />This second link shows an <a href="https://www.quantamagazine.org/pentagon-tiling-proof-solves-century-old-math-problem-20170711/">image of the 15 families of pentagons that tile the plane</a>.Math Mammothhttps://plus.google.com/105961364219775463476noreply@blogger.com0tag:blogger.com,1999:blog-18322056.post-70964755376018516782017-12-11T13:06:00.000-04:002017-12-11T13:06:15.324-04:002018 DIY desk calendarHere's a little gift for you!<br /><br /><div class="separator" style="clear: both; text-align: center;"><a href="http://www.childrensbestactivities.com/"><img alt="Calendar" border="1" data-original-height="712" data-original-width="551" height="320" src="https://3.bp.blogspot.com/-CKr6hrGHgQM/Wi66b1t1_5I/AAAAAAAABlY/flIVc1E2_t0aB7mrxeQGWECsn7aHQMpNgCLcBGAs/s320/DIY_Calendar.png" title="2018 calendar" width="247" style="border:2px solid pink" /></a></div><br />A printable DYI 2018 desk calendar with fun activities for children to complete. The activities are taken from my daughter Abby's website at <a href="http://www.childrensbestactivities.com/">Children's Best Activities</a> :)<br /><br />Download the calendar here:<br /><br />https://www.mathmammoth.com/download/2018_DIY_Printable_Desk_Calendar.pdf<br /><br />This calendar has been produced in collaboration with the Homeschool Buyers Co-op<br /><br />Math Mammothhttps://plus.google.com/105961364219775463476noreply@blogger.com0tag:blogger.com,1999:blog-18322056.post-24787571329349414212017-12-08T16:24:00.001-04:002017-12-08T16:24:51.207-04:00Missing numbers in addition<div style="clear: right; float: right; margin-bottom: 1em; margin-left: 1em;"><a href="https://www.mathmammoth.com/lessons/missing_numbers_addition.php"><img height="150" src="https://www.mathmammoth.com/lessons/images/missing_addend_problems.gif" width="320" /></a></div>Several people have asked me about this... what to do when a 1st grader is struggling to grasp the concept of missing numbers in addition problems, such as 3 + ___ = 8. <br /><br />I wrote the solution and posted it on my site... <a href="https://www.mathmammoth.com/lessons/missing_numbers_addition.php">what to do when a child has a hard time finding the missing addends?</a><br /><br /><br />Math Mammothhttps://plus.google.com/105961364219775463476noreply@blogger.com0tag:blogger.com,1999:blog-18322056.post-55338219439336778642017-11-30T14:39:00.000-04:002017-11-30T14:39:25.255-04:00Card game for math facts<a href="http://littleblueschool.blogspot.com/2007/09/math-card-game-for-addition-subtraction.html" imageanchor="1" style="clear: right; float: right; margin-bottom: 1em; margin-left: 1em;"><img border="0" data-original-height="426" data-original-width="640" height="133" src="https://3.bp.blogspot.com/-u5j-idTNcbs/WiBP4yU_qhI/AAAAAAAABlE/0OLU562u7IELL1O8Sc8asF9PaoijH8FnwCLcBGAs/s200/cards.jpg" width="200" /></a>I found this link when looking through some "OLD" stuff (my newsletter 10 years ago... in this Internet day and age, 10 years seems like an eternity ago!). It's a neat little "<a href="http://littleblueschool.blogspot.com/2007/09/math-card-game-for-addition-subtraction.html">game</a>" for math facts:<br /><br /><a href="http://littleblueschool.blogspot.com/2007/09/math-card-game-for-addition-subtraction.html">http://littleblueschool.blogspot.com/2007/09/math-card-game-for-addition-subtraction.html</a><br /><br />To be more precise, it is a way for kids to write some of their own math problems using a deck of cards. 😃 But it can definitely FEEL like a game for little ones!<br /><br />Math Mammothhttps://plus.google.com/105961364219775463476noreply@blogger.com0tag:blogger.com,1999:blog-18322056.post-75472249374864550762017-11-16T08:59:00.005-04:002017-11-16T08:59:44.664-04:00Math Mammoth Thanksgiving sale<div class="separator" style="clear: both; text-align: center;"><a href="http://www.mathmammoth.com/books.php" imageanchor="1" style="clear: right; float: right; margin-bottom: 1em; margin-left: 1em;"><img border="0" data-original-height="250" data-original-width="250" height="200" src="https://4.bp.blogspot.com/-jewfaHuvctE/Wg2Lmajr31I/AAAAAAAABk0/t-Wu__2l46MOHpBEmfPrvz0D794tNaU9gCLcBGAs/s200/250_Square.jpg" width="200" /></a></div><b>Math Mammoth THANKSGIVING sale is here! </b><br /><br />Get 25% off of all the downloads/CDs sold at <a href="http://www.mathmammoth.com/books.php">MathMammoth.com site</a>! Use the coupon code THANKS2017.<br /><br />The offer is valid till December 3, 2017.<br /><br /><a href="http://www.mathmammoth.com/books.php">Start browsing!</a><br /><div><br /></div>Math Mammothhttps://plus.google.com/105961364219775463476noreply@blogger.com0tag:blogger.com,1999:blog-18322056.post-9091241629121537342017-10-09T08:42:00.000-04:002017-10-09T08:42:37.431-04:00Four principles of deeply effective math teaching<div class="separator" style="clear: both; text-align: center;"><a href="http://www.mathmammoth.com/lessons/four-habits.php" imageanchor="1" style="clear: right; float: right; margin-bottom: 1em; margin-left: 1em;"><img border="0" data-original-height="396" data-original-width="640" height="198" src="https://4.bp.blogspot.com/-R1jKl3y-dKo/WdtuBeD1QJI/AAAAAAAABkU/RYH3YdukzxMrb9Mrsu4x3Hn158jtSnNGQCLcBGAs/s320/business-presentation.jpg" width="320" /></a></div>I went through and thoroughly updated this article of mine... have you read it in the past?<br /><br /><a href="http://www.mathmammoth.com/lessons/four-habits.php">Four basic principles of deeply effective math teaching</a><br /><br />If you were asked what were the most important principles in mathematics teaching, what would you say? I wasn't really asked, but I started thinking, and came up with these basic habits or principles that can keep your math teaching on the right track.<br /><div class="separator" style="clear: both; text-align: center;"><a href="http://www.mathmammoth.com/lessons/four-habits.php" imageanchor="1" style="clear: right; float: right; margin-bottom: 1em; margin-left: 1em;"><img border="0" data-original-height="375" data-original-width="450" height="266" src="https://1.bp.blogspot.com/-50UlUz42UyY/WdtuBprAtpI/AAAAAAAABkY/s_kMlcr49M86VHlfsEnGJBRkrhaLbxtgwCLcBGAs/s320/retro-1291738_640.jpg" width="320" /></a></div><br />Principle 1: Let It Make Sense<br />Principle 2: Remember the Goals<br />Principle 3: Know Your Tools<br />Principle 4: Living and Loving Math<br /><div><br /></div>Math Mammothhttps://plus.google.com/105961364219775463476noreply@blogger.com0tag:blogger.com,1999:blog-18322056.post-39623653848640128022017-10-02T12:13:00.000-04:002017-10-02T12:13:07.244-04:00Play With Your Math puzzles<div class="separator" style="clear: both; text-align: center;"><a href="https://playwithyourmath.com/" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="880" data-original-width="1600" height="176" src="https://3.bp.blogspot.com/-sO2_DXgILQU/WdJlU3dTPII/AAAAAAAABkE/MxHOsZpHkFky0SxhZ2fbSRl74NHi0OK7wCLcBGAs/s320/playwithyourmath.png" width="320" /></a></div><br />An intriguing website.... problems, but not solutions (not that I can see... but maybe, if you subscribe to get email updates, you'd get the solutions?)<br /><br /><a href="https://playwithyourmath.com/">https://playwithyourmath.com/</a><br /><br />Their idea is,<br /><blockquote class="tr_bq"><i>We take problems that we love, and we adapt them so that everyone (and anyone) can play. We design posters and handouts that hook you visually and explain the problem in just enough words. The problems that we’ve picked require trying, struggling, failing, adjusting, and trying again until, finally, a discovery is made.</i></blockquote><br />I definitely agree... that's what TRUE problem solving is all about! Doing it with math can prepare students for REAL LIFE, where often, the problems they will be facing at the workplace will NOT have a pre-written solution.<br /><br />And so, that's when it's necessary to try something, struggle, fail, ADJUST your method, and try again... that's what scientists do, day in day out, and people in about any profession who are really successful in their jobs.<br /><br />The process of solving those problems on that site reminds me of trying to solve a tricky cross-word puzzle. I figure you probably know people who LOVE the challenge cross-word puzzles give them... when they to try to solve the ENTIRE thing. (I've enjoyed that myself in my younger years.) Well, the same can be true of math problems! Not the kind you see in math books, but the kind you see on <a href="https://playwithyourmath.com/">playwithyourmath.com site</a>.Math Mammothhttps://plus.google.com/105961364219775463476noreply@blogger.com0tag:blogger.com,1999:blog-18322056.post-79129325947340669552017-09-27T16:48:00.000-04:002017-09-27T16:48:34.439-04:00Tower of Babel and spiritual languages<div style="max-width: 650px;"><a href="http://www.inspire4.com/tower-of-babel-today-part-1/" title="Nimrod watching the construction of the tower of Babel from his tent"><img border="0" src="https://www.mathmammoth.com/newsletter/images/nimrod-watching.jpg" style="margin: auto; width: 100%;" /></a></div><br />I invite you to enjoy <a href="http://www.inspire4.com/tower-of-babel-today-part-1/">this Bible study about the tower of Babel</a>, the division of languages there — AND the picture it gives us of SPIRITUAL languages today. <br /><br /><table cellpadding="2"><tbody><tr><td style="float: left;"><a href="http://www.inspire4.com/tower-of-babel-today-part-1/" title="Nimrod thinking of building a tower"><img border="0" src="https://www.mathmammoth.com/newsletter/images/nimrod-tower.jpg" style="margin: auto; max-width: 316px;" /></a></td><td style="float: left;"><a href="http://www.inspire4.com/tower-of-babel-today-part-1/" title="Builders not understanding each other"><img border="0" src="https://www.mathmammoth.com/newsletter/images/builders-not-understand.jpg" style="margin: auto; max-width: 316px;" /></a></td><td style="float: left;"><a href="http://www.inspire4.com/tower-of-babel-today-part-1/" title="Spiritual language"><img border="0" src="https://www.mathmammoth.com/newsletter/images/sp-language.jpg" style="margin: auto; max-width: 316px;" /></a></td><td style="float: left;"><a href="http://www.inspire4.com/tower-of-babel-today-part-1/" title="division"><img border="0" src="https://www.mathmammoth.com/newsletter/images/division.jpg" style="margin: auto; max-width: 316px;" /></a> </td></tr></tbody></table><br />Math Mammothhttps://plus.google.com/105961364219775463476noreply@blogger.com0tag:blogger.com,1999:blog-18322056.post-53105255516638934712017-09-12T17:03:00.001-04:002017-09-12T17:03:19.822-04:00Math Mammoth printed books sale!<div class="separator" style="clear: both; text-align: center;"><a href="http://www.rainbowresource.com/prodlist.php?subject=Mathematics/10&category=Math+Mammoth/9820" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="416" data-original-width="742" height="223" src="https://4.bp.blogspot.com/-kAXYHWe_9d0/WbhLTKTZFuI/AAAAAAAABjw/CF_9m42R12UVHsbiWy8_VKxR1itbOhjJwCLcBGAs/s400/2017_MathMammothOnSale-1505224093.jpg" width="400" /></a></div><span style="background-color: white; color: #1d2129; font-family: "helvetica" , "arial" , sans-serif; font-size: 14px;"><br /></span><span style="background-color: white; color: #1d2129; font-family: "helvetica" , "arial" , sans-serif; font-size: 14px;">From September 12 till September 18, 2017, get Math Mammoth printed books at 20% off at <a href="http://www.rainbowresource.com/prodlist.php?subject=Mathematics/10&category=Math+Mammoth/9820">Rainbow Resource Center</a>. :)</span><br /><div><br /></div>Math Mammothhttps://plus.google.com/105961364219775463476noreply@blogger.com0tag:blogger.com,1999:blog-18322056.post-24445623594109369342017-09-11T11:59:00.002-04:002017-09-11T11:59:27.522-04:00Math Mammoth Skills Review Workbooks<div style="clear: right; float: right; margin-bottom: 1em; margin-left: 1em;"><img alt="Math Mammoth Grade 2 Skills Review Workbook" src="https://www.mathmammoth.com/skills_review_workbooks/images/mm_Skills-Review-Workbook_Grade2_s.jpg" /></div>Here are some totally NEW Math Mammoth products!<img alt=":)" height="20" src="https://www.mathmammoth.com/newsletter/images/smiley-s.png" width="20" /><br /><br /><a href="http://www.mathmammoth.com/skills_review_workbooks/" target="_blank"><b>Math Mammoth skills review workbooks</b></a> have been designed to complement the lessons in <a href="http://www.mathmammoth.com/complete-curriculum.php" style="font-weight: normal;">Math Mammoth complete curriculum</a> (Light Blue series). <br /><br />These books are designed to provide a spiral review of the concepts in the curriculum, and to be used during the school year, alongside the main curriculum. After a concept or skill has been studied in the main curriculum, it is then reviewed repeatedly over time in several different worksheets of the workbook. <br /><br /><div style="clear: right; float: right; margin-bottom: 1em; margin-left: 1em;"><img alt="Math Mammoth Grade 1 Skills Review Workbook" src="https://www.mathmammoth.com/skills_review_workbooks/images/mm_Skills-Review-Workbook_Grade1_s.jpg" /></div>Each book contains 70-100 worksheets, and is divided into chapters, according to the corresponding chapters in the Math Mammoth curriculum. Each worksheet is designed to be one page, and includes a variety of exercises in a fun way without becoming too long and tedious. <br /><br />You can choose exactly when to use the worksheets within the chapter, and how many of them to use. Not all students need all of these worksheets to help them keep their math skills fresh, so please vary the amount of worksheets you assign your student(s) according to their needs. <br /><br />Currently, we have the books for grades 1-2 available, and grade 3 is coming SOON. <br /><br /><a href="http://www.mathmammoth.com/skills_review_workbooks/" target="_blank">=> Learn more here.</a>Math Mammothhttps://plus.google.com/105961364219775463476noreply@blogger.com0tag:blogger.com,1999:blog-18322056.post-77350968989208431412017-09-07T09:49:00.003-04:002017-09-07T09:49:51.809-04:00Favorite numbers poll<div class="separator" style="clear: both; text-align: center;"><a href="http://mathhombre.blogspot.com/2017/09/top-ten-favorite-numbers.html" imageanchor="1" style="clear: right; float: right; margin-bottom: 1em; margin-left: 1em;"><img border="0" data-original-height="851" data-original-width="407" height="320" src="https://1.bp.blogspot.com/-vrJng0ASZ3c/WbFOODUlT_I/AAAAAAAABjg/fgm5TOouJd0ZJgfxmZ_SnqJ2Fn4mkgijwCLcBGAs/s320/favorite-numbers.png" width="153" /></a></div>Math Hombre conducted <a href="http://mathhombre.blogspot.com/2017/09/top-ten-favorite-numbers.html">an unofficial favorite numbers poll</a>... the results are interesting! <br /><br />If you cannot wait to read the article, Pi is the winner! <br /><br />Some pointers: <br /><ul><li style="margin-bottom: 10px;">Phi is the <a href="https://en.wikipedia.org/wiki/Golden_ratio" target="_blank">golden ratio</a>, a mathematically important constant</li><li style="margin-bottom: 10px;">The number <i>e</i> is extremely important mathematically and ties in with exponential growth. In fact, of their list, <i>e</i> is my favorite!</li><li style="margin-bottom: 10px;">In case you don't know know why 42 made the top ten... it comes from the book Hitchhikers' Guide to the Galaxy and in that book it is made to be the "answer to the universe and everything" (a joke).</li></ul><br />Check out <a href="http://mathhombre.blogspot.com/2017/09/top-ten-favorite-numbers.html">the complete list here</a>. Math Mammothhttps://plus.google.com/105961364219775463476noreply@blogger.com0tag:blogger.com,1999:blog-18322056.post-55854993406409013152017-08-25T08:45:00.002-04:002017-08-25T08:45:22.483-04:00Babylonian tablet with simpler trigonometry than our ownThis is fascinating!<br /><br /><div class="separator" style="clear: both; text-align: center;"><a href="https://www.theguardian.com/science/2017/aug/24/mathematical-secrets-of-ancient-tablet-unlocked-after-nearly-a-century-of-study" imageanchor="1" style="clear: right; float: right; margin-bottom: 1em; margin-left: 1em;"><img border="0" data-original-height="240" data-original-width="400" height="192" src="https://4.bp.blogspot.com/-KdDyAXee94E/WaAbwM-EVXI/AAAAAAAABjQ/gGBk6tiXwowP5R0nsWok2Y7iixrEF8dYwCLcBGAs/s320/1600.jpg" width="320" /></a></div>An <a href="https://www.theguardian.com/science/2017/aug/24/mathematical-secrets-of-ancient-tablet-unlocked-after-nearly-a-century-of-study">ancient Babylonian tablet</a> contains the world's oldest trigonometric table; but not only that.... it is also the only COMPLETELY ACCURATE trigonometric table, because of the very different Babylonian approach to arithmetic and geometry (using the base 60 instead of base 10).<br /><br />This tablet uses simpler, yet more accurate trigonometry that has clear advantages over our own modern version. It's based on ratios instead of angles and circles.<br /><br />It is rare that an ancient discovery could be teaching today's mathematicians something new but that seems to be the case here!<br /><br />I'm sure many students would welcome a simpler approach to trigonometry!<br /><br /><a href="https://www.theguardian.com/science/2017/aug/24/mathematical-secrets-of-ancient-tablet-unlocked-after-nearly-a-century-of-study">https://www.theguardian.com/science/2017/aug/24/mathematical-secrets-of-ancient-tablet-unlocked-after-nearly-a-century-of-study</a>Math Mammothhttps://plus.google.com/105961364219775463476noreply@blogger.com0tag:blogger.com,1999:blog-18322056.post-30955991483037976932017-07-31T08:16:00.002-04:002017-07-31T08:16:33.917-04:00How to talk math with your kids - videoKent Haines is both a math teacher and a dad. In this video, he shares some excellent tips on how to help your children's "math-readiness", expressing it with a modern term. Or we might just say, how to help your children understand their world with math. It's aimed at parents of little children but the ideas ring true for other ages too:<br /><br />The three important guidelines he shares are:<br /><br />1. Use math language.<br />2. Play.<br />3. Focus on questions, not on answers.<br /><br />I enjoyed the video!<br /><br /><br /><iframe allowfullscreen="" frameborder="0" height="281" src="https://www.youtube-nocookie.com/embed/OitL1ZI0azo?rel=0" width="500"></iframe>Math Mammothhttps://plus.google.com/105961364219775463476noreply@blogger.com0tag:blogger.com,1999:blog-18322056.post-72682185607684962802017-07-21T15:34:00.003-04:002017-07-21T15:34:56.877-04:00Word problems involving "four times as many as"Someone asked for help to explain the concepts of multiplicative word problems involving "as many as", like the ones below:<br /><br /><blockquote class="tr_bq">1) Haley had four times as many dollars as her sister. Together they had $60. How much money does Haley have?<br /><br /><br />2) Rachel had 5 times as many dollars as her sister, Nora. They had a total of $90. How much money did each of them have?</blockquote><br /><br />The <b>BAR MODEL</b> is an excellent tool for helping children understand what is going on in these types of word problems.<br /><br />In (1), draw a bar for Haley and another for her sister. Divide Haley's bar into four parts, and make the other bar just one such part long.<br /><br /><span style="color: #b45f06;">Haley |---|---|---|---|</span><br /><br /><span style="color: #351c75;">Sister |---|</span><br /><br /><br />Now you will see that the TOTAL needs divided into FIVE equal parts — and from then on it is easy-peasy.<br /><br /><hr color="black" size="1" /><br /><div class="separator" style="clear: both; text-align: center;"><a href="http://www.mathplayground.com/tb_multiplication/index.html" imageanchor="1" style="clear: right; float: right; margin-bottom: 1em; margin-left: 1em;"><img border="0" data-original-height="695" data-original-width="927" height="239" src="https://3.bp.blogspot.com/-eJ5CYilRzKI/WXJXOnY6f0I/AAAAAAAABi4/Rged6Sb3SEUSElZc9AQxOryjTMvJlTHgQCLcBGAs/s320/thinking%2Bblocks.png" width="320" /></a></div><br />Additionally, you can use <a href="http://www.mathplayground.com/tb_multiplication/index.html">Thinking Blocks website</a> to build such bar models INTERACTIVELY.<br /><br />For problems like (1) and (2) above, choose the fourth model from the left (rightmost) in the top row that is bluish in color. Then click "Start modeling" button. Video tutorials exist also. This is not my site, but it's a very nice interactive tool for this concept!<br /><br /><br /><br /><br />Math Mammothhttps://plus.google.com/105961364219775463476noreply@blogger.com0tag:blogger.com,1999:blog-18322056.post-57932986973603270072017-07-13T09:26:00.002-04:002017-07-13T09:26:27.174-04:00Flash sale for Math MammothHomeschool Buyers Co-op is running a <a href="https://www.homeschoolbuyersco-op.org/math-mammoth/">FLASH SALE</a> for the large Math Mammoth bundles — get them at 40% off! This sale ends on July 17, 2017.Math Mammothhttps://plus.google.com/105961364219775463476noreply@blogger.com0tag:blogger.com,1999:blog-18322056.post-68607335709407144512017-07-03T23:35:00.001-04:002017-07-03T23:35:59.658-04:00Graph paper, and those who don't love math<div class="separator" style="clear: both; text-align: center;"><a href="https://3.bp.blogspot.com/-ELdGhHaoFAw/WVsMXnjXFKI/AAAAAAAABio/hI-KQdaXu0AnsLkWBIwG--hVxfpwmbnXQCLcBGAs/s1600/IMAG1728.jpg" imageanchor="1" style="clear: right; float: right; margin-bottom: 1em; margin-left: 1em;"><img border="0" data-original-height="574" data-original-width="1024" height="223" src="https://3.bp.blogspot.com/-ELdGhHaoFAw/WVsMXnjXFKI/AAAAAAAABio/hI-KQdaXu0AnsLkWBIwG--hVxfpwmbnXQCLcBGAs/s400/IMAG1728.jpg" width="400" /></a></div>If you have a few minutes, check out<br /><br /><a href="http://tjzager.com/2017/06/17/representations-and-manipulatives-and-tools-and-things/">http://tjzager.com/2017/06/17/representations-and-manipulatives-and-tools-and-things/</a><br /><br />It's an interesting and encouraging read. Thoughts about technology (no need for it at every turn), and how to teach those who don't love math, and how just a piece of graph paper can lend itself to a powerful learning tool...!<br />Math Mammothhttps://plus.google.com/105961364219775463476noreply@blogger.com0