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In this quick activity (page 1 of PDF under SciGirls Activity: Exercise and Memory), learners will investigate what happens to bubble gum when it is chewed for 5-10 minutes.

Learners investigate weight by building a spring scale. They observe and record how it responds to objects with different masses.

Learners drop two different masses of play dough and observe how long it takes them to hit the ground.

In this activity, learners will explore how and why weight distribution works.

In this activity, learners explore how engineers use scales and measures when designing a manufacturing process to ensure that final products are uniform in weight or count.

In this activity, learners use two different techniques to estimate how many little things fit into one bigger thing.