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Your heart pumps blood throughout your body in one direction, around in a loop. In this activity, learners will make a model of one type of heart chamber called a ventricle.

In this activity, learners create a "Jam Jar Jet" based on Francois Reynst's discovery of a pulsejet engine, which uses one opening for both air intake and exhaust.

In this activity, learners are challenged to design and build a miniature tree house in a potted plant. This activity uses engineering concepts to encourage creativity.

In this activity (on page 14 of PDF), learners use a pan full of flour and some rocks to create a moonscape.

This paper describes a working-model demonstration of Ernest Rutherford's 1911 experiment about the nature of atoms.

This activity introduces learners to the structure and properties of carbon nanotubes.