Price: 1250 points or $12.5 USD
Subjects: math
Grades: 1,2,3
Description: When learning addition and subtraction facts, it's not in the child's best interest to be given all 200 facts at once. These decks have 8 different levels, based on patterns and fact families. (Plus 2 review levels!) Children can advance from one level to the next as they show mastery. The final 2 decks review all 8 levels in the research based series. These decks make it easy to differentiate, since children master levels at different paces. For more information about the research that goes into this system, see http://bit.ly/2vJjtxi and http://bit.ly/2wotMUm .