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In this activity about computer programming, learners follow instructions in a variety of ways in order to successfully draw figures.

In this activity, learners build bridges using paper and explore how much weight each bridge design can support.

This activity shows learners how computers use numbers to represent pictures. A grid is used to represent the pixels (short for picture elements) of a computer screen.

In this international citizen science activity, learners measure their night sky brightness and submit their observations into an online database.

In this activity, learners build large-scale structures and cantilevers in a series of "building out" challenges with garden poles and tape.

In this online activity, learners will explore size estimation in one, two and three dimensions. Multiple levels of difficulty allow for progressive skill improvement.

In this activity, learners build scaled-down structures and cantilevers in a series of "building out" challenges with bamboo skewers and tape.