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In this activity (on page 2), pairs of learners create an imaginary crime scene. One person leaves the room while the other person moves a few things around.

This is an activity where learners will compare the different metamorphosis stages of amphibians.

In this interactive game, learners compare their music-listening skills with that of a three-month-old baby.

In this interactive game, learners listen to the songs of four different thrushes and then try to match each bird with its song.

In this online activity, learners make a whole rainbow by mixing red, green, and blue light. They can change the wavelength of a monochromatic beam or they can filter white light.

In this hands-on activity, learners make the world's simplest Cartesian diver, using only a plastic bottle, some water, and a condiment packet.

In this online activity, learners discover how random variation influences biological evolution.

In this simple game, learners start to understand how to sort and categorize objects by trying to guess the connection between three items that someone else has chosen.