Now here is a wondering for us. What do you think would happen if we scooped them all up and shared them back out into 4 equal rows again?

Two words we will use all lesson: a times fact multiplies groups together, and a share fact deals a total back out — both use the same three numbers. The interactive deals out three sharings. After each one, ask yourself: what times fact matches this share?

Today we work through four sets together. For each one, we deal the total into equal groups on the board. Then we read the times fact off it. Then we say the share fact that undoes it.

Here are our four sets: 2 groups of 5, then 3 groups of 4, then 5 groups of 4, and finally 6 groups of 3. Reset the tool for each new set.

Today we build and share four totals in turn. For each one, we write the whole times-and-share family of four facts. Here are the four totals: 10 shared into 2, then 12 shared into 3, then 20 shared into 5, and finally 18 shared into 6.

Keep the model four-fact family from your copy on the board while you write. Your families follow the same four-fact shape.