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In this biology activity, learners use plastic pipettes to cut wells into the solid gel layer of agar in petri dishes and place solutions of simulated antigen and antibody preparations into the wells.

In this set of outdoor games, learners play the role of monkeys that are trying to get enough resources (food, shelter, and space) to survive.

This activity guide includes instructions on how to build a "Shake Table" by mounting an eccentric mass (off center) on the shaft of a small dc motor.

Learners build a wind turbine and test it to see how much energy is created.

In this activity, learners follow step-by-step instructions to build a gel electrophoresis chamber using inexpensive materials from local hardware and electronic stores.

In this activity, learners evaluate the potential performance of air rockets placed inside a wind tunnel.

This simulation of laparoscopic surgery enables learners to practice and to learn this modern surgical technique.

In this activity, learners build models of comets, using edible materials, to learn about comets' structure.

In this activity, learners try to float ink on the surface of water to create a pattern and then capture it with absorbent paper.

This activity guide includes instructions for building a spectroscope using a standard classroom overhead projector.

In this outdoor activity, learners cut through and investigate rotten logs and then make log-profile puzzles for each other.