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In this activity, learners explore how engineers use scales and measures when designing a manufacturing process to ensure that final products are uniform in weight or count.

In this activity, learners use simple items to construct a device for indicating air pressure changes.

In this classic hands-on activity, learners estimate the length of a molecule by floating a fatty acid (oleic acid) on water.

In this activity, learners explore the devices used over time to measure changes in temperature.

In this activity, learners cut wells in JELL-O© and load the wells with different detergent solutions.

In this experiment, learners construct an equilateral triangle using graph paper, a pencil, protractor and ruler. They also make a "laser triangle" using a laser pointer and front-silvered mirrors.

In this activity, learners use simple items to construct a device for indicating air pressure changes.

Learners build a filter from old soda bottles and dirt. They create polluted water, and pour it through their filter to clean it.