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.

K – CO – RT6

You want to put the counters from the math center into two bags. Your goal is to have one bag a lot heavier than the other bag. Explain your thinking as you work towards your goal.

K – CO – RT7

The look of objects can be misleading. Find two things in your classroom that look like they have the same mass but are actually very different. What are the two items? Can you explain the difference in mass?

K – CO – WP7

Two gardeners entered a contest to grow the tallest sunflower. What would you use to compare the length of each sunflower?

K – CO – OE9

Two objects are almost the same weight. What could the heavier object be?

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