An ancient story revisited

I think many of you will be interested in this video story!

It is an ancient story that was originally told almost 2000 years ago... Since that time, and even in today's modern world, many people have used the basic theme of that story as a basis for their own stories.

It is presented in a fascinating multi-media presentation form. Click the picture above to view the video!

Flash sale for Math Mammoth

Homeschool Buyers Co-op is running a FLASH SALE for the large Math Mammoth bundles — get them at 40% off! This sale ends on July 17, 2017.

Graph paper, and those who don't love math

If you have a few minutes, check out

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...!

What age do YOU think is old?

I just saw this in the IntMath Newsletter I subscribe to...

Here's an age equation that's pretty accurate:

OldAge = 10 * √NowAge

When you're 16, old people are 40. When you're 50, old people are 70, and when you're 100, you know you're old!

Hat Tip to Murray from

A five-year old GOT the connection between addition and subtraction

I just got this in from a customer... how PRECIOUS!

Lydia, who is not yet five years old, has just started the subtraction section of Math Mammoth 1A. She made an amazing discovery and wanted to tell you about it. A photo of her letter is attached, which a translation here.

"Dear Math People,
I found out
When you do a subtraction
It's adding
Did you know about that?


Lydia's mom also said that she feels Lydia is going to be so amazed when the workbook points this out a few pages from now!

Multiplication algorithm and lattice multiplication

This is a GOOD comparison between the standard multiplication algorithm and lattice multiplication!

The author even brings in the area model for multiplying multi-digit numbers (which I also show in Math Mammoth). The area model is of course only used to show students what is going on, based on place value -- not to replace any algorithm.

In our desire for "efficiency," we lose transparency in the standard "long multiplication" algorithm. Read it at

Math Mammoth printed books sale

Math Mammoth printed books at now at 20% off at Rainbow Resource Center!

Please note that they sell TWO versions of the books:

(1) Books in full color
(2) Books with black-and-white inside pages

BOTH have full-color covers so you cannot go by that. The full color books cost slightly more. You can mix and match if you'd like, such as by purchasing the student books in full color and the answer key and test books with black-and-white inside pages.

This promotion runs till June 2, 2017.

Math Mammoth sale - May 2017

Use coupon code MAYSALE2017 to get 25% off of all Math Mammoth & Make It Real Learning downloads and CDs sold at site. 😃

This promotion is valid through Monday, May 29, 2017.