K – CC – RT2

Two students were asked to count all the marbles in a collection. After counting the collection, Susie said there were 6 marbles. After Paul counted the collection, he said there were 7 marbles. Can they both be correct? Explain your...

K – CC – PP11

Provide students with a set of 9 items. Ask students to count the items. Ask students to show you 9. Note whether students point to the last item counted or whether they show the set of 9 items.

K – CC – OE1

Direct students to grab a handful of linking cubes. Ask students how many linking cubes they picked up.

K – CC – RT3

Two students were asked to count all the stamps in a collection. After counting the collection, Monica said there were 7 stamps. After Jana counted the collection, she said there were 8 stamps. Can they both be correct? Explain your...

K – CC – PP1

Provide students with a set of 7 items. Ask students to count the items and tell you how many are in the set.

Subscribe To Our Newsletter

Join our mailing list to receive the latest news and updates from Dr. David Costello.

You have successfully subscribed!