K – CC – RT1

Tanya said that the way she arranged her books changed the amount she had in her collection. What advice about counting would you give to Tanya?

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 – 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 – RT4

Danny had a collection of items in a small bag. Jasmyn had a collection of items in a large bag. Danny thought that his collection had less than Jasmyn’s because his was in a small bag. Do you agree with Danny?

K – CO – RT5

Your physical education teacher is teaching students how to properly throw a ball. The teacher provides students with different-sized balls that all weigh differently. Explain the weight difference in the balls.

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