Skip Count and Addition Facts Songs.
More Blocks: We recommend the Completer Set 2. When added to the Starter Set 1, this will provide 10 each of the manipulatives with additional tens and unit blocks.
Online Drill: For more problems to practice the addition and subtraction facts.

Sample Pages

Scope and Sequence

"It continually amazes me that one of my children doesn't know all the letters in the alphabet, but she can say her "0" facts in less than 3 seconds, and is working on her "1" facts. I wish I had known about Math·U·See when my older children were in elementary school ... it would have saved me many tears and lots of gray hairs!!"