This is a different way for kiddos to learn math facts - multiplication math facts.
It also teaches a physical model, so they are not memorizing unconnected facts when using the AREA model. Besides, kiddos should KNOW the term 'Perfect Squares' and its physical meaning...it will help them when they learn the Pythagorean Theorem and Quadratics in middle school, or should anyway.
For the repetitive addition model, it is recommended that the student learn their multiples to the 10th multiple from 1 through 12.
Easy to use with Spaced Repetition Instruction Systems - white paper on this TPT account - Free Download.
Ending 2nd grade (if kiddos are ready) and up through 7th grade
Best to you and your kiddos. Blaine Helwig