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In this math lesson, learners estimate distances between landmarks and use a map and scales to determine the actual distances.

Learners can program a compass to draw a circle by itself using a Pico Cricket, some Legos, and lots of tape! Pico Cricket is required.

In this math lesson, learners make estimates to analyze the number of apples per acre, and visualize the magnitude of one million.

In this astrobiology activity (on page 11 of the PDF), learners consider what organisms need in order to live (water, nutrients, and energy).