Check it out!
In my search for sites to help my students with disabilities, I found this gem!
It's called A Maths Dictionary for Kids.
The site has two sections. One is an alphabetical math dictionary with colorful, interactive demonstrations or explanations of the words/skills. The other section is for math charts. Did I mention that it's FREE ??? Oh, and the charts are printable!
I'm an Instructional Coach at Daniel Island School in Berkeley County South Carolina and a Google Certified Trainer.