Join Mrs. Ignagni for a Mystery Math Mistake with her friend Springling. Can you figure out where she went wrong on her open number line?

Explore the Multiply by 7 facts using the grouping of objects and arrays. Compete against characters to see who finds the product first. Practice with the commutative property of multiplication and 7's. Use multiplication facts you already know to help find the product when one factor is 7.

Warm up with a Mystery Math Mistake to tell whether Dotson's 10-frames represent a number more than his focus number. Examine a train to find shapes. Put together shapes to make familiar objects.