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In this activity, learners make a scale model of the Solar System and learn the real definition of "space." Learners use the online calculator to create an appropriate scale to use as a basis for thei

This lesson focuses on how to measure at the nanoscale and provides learners with an understanding how small a nanometer really is.

This fun and simple hands-on astronomy activity lets learners build a scale model of the universe with little more than adding machine tape.

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

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

In this graphing exercise (page 2 of the pdf), learners compare their own height to the length of various sharks.

In this activity on page 7 of the PDF, learners investigate the solubility of gas in water at different temperatures. This experiment will help learners determine if temperature affects solubility.