Showing posts from February, 2019

Online practice for fact families (addition & subtraction)

New in the Math Mammoth online practice section! Fact families (addition & subtraction) Fact families is one of the main approaches I've used for addition & subtraction facts in the Math Mammoth curriculum . For example, in the online practice program, you could choose to practice fact families with 6. This means you will get addition & subtraction problems like what you see in the picture below -- and also including missing number problems. Check it out!

Folding and cutting (paper) for geometric shapes

Here's an enjoyable math video for students and parents/teachers alike. It's about folding and cutting... but it still IS very much about math -- because the lady models the basics of mathematical thinking in a wonderful way as she goes on cutting shapes... 😊

BIG news: online math practice at

This is a big announcement! I have the pleasure to announce a NEW section on Math Mammoth website that focuses on ONLINE PRACTICE for various math concepts! I am sure that many of you will get lots of use out of this new section. The scripts there have been made by my son; let's just call him Codelover 😃. He's still pretty young, but he loves coding and web development, and has been learning a lot about those topics right and left for a while now (mostly using courses from Udemy). I do have a favor to ask though. He made this section in such a manner that it SHOULD work offline (it's something called "progressive web app"; I don't personally understand these concepts nearly as well as he does so I won't even try to explain it). It seems that sometimes it's necessary to RELOAD the page a few times to make it work offline. He would appreciate it if you can test whether it indeed works offline also, or not, and then leave feedback on the s