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 site. Please list you…