K – CN – RT6

You choose two numbers. You want to show your friends that the two numbers are far apart. How can you arrange items to show your friends this comparison?

K – PN – RT10

The teacher selected a mystery number to break apart. The only hint she gave was that one part of the whole could be 3. What is the mystery number the teacher selected and what could be the two parts? Explain your...

K – PN – RT11

The teacher selected a mystery number to break apart. The only hint she gave was that the number could be broken up in two parts different ways. What is the mystery number the teacher selected and what could be the two parts? Explain your...

K – PN – RT2

You and a partner each have a collection of linking cubes. When you each break apart your collection, sometimes you have the same amounts in each part and other times the amounts in each part are different. Do you each have the same number of linking cubes in your...

K – PN – RT3

You notice when you break a number into two parts, that one of the parts is a big number? What could the whole and two parts be? Explain your thinking.

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