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In this activity, learners explore a scale by comparing objects, which look similar but have different weights. Learners predict and then measure the weights of various objects using a scale.

In this quick activity about size and scale (on page 2 of the PDF under What's Nano?

This game presents you with several different choices you can make in the course of your everyday life to increase your level of physical activity and be healthier.

Learners tour their school or home looking for sources of indoor air pollutants (IAPs).

In this activity on page 1 of the PDF, learners compare the relative sizes of biological objects (like DNA and bacteria) that can't be seen by the naked eye.

Learners color and cut out a spiral-shaped snake. When they hang their snake over a radiator, the snake spins.