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This is a classic exercise for visualizing the scale of the Solar System.

In this nanoscience activity, learners discover that it's easy to pour water out of a regular-sized cup, but not out of a miniature cup.

In this activity, learners investigate how inkjet printers produce tiny, precise drops of ink.

In this demonstration, learners compare the relative sizes and masses of scale models of the planets as represented by fruits and other foods.

Demonstrate the Bernoulli Principle using simple materials on a small or large scale.

Learners explore the concepts of equilibrium and center of mass by seeing how non-symmetrical objects balance.

Learners engage in close observation of falling objects. They determine it is the amount of air resistance, not the weight of an object, which determines how quickly an object falls.

Learners observe a simple balloon model of an electrostatic precipitator. These devices are used for pollutant recovery in cleaning industrial air pollution.

In this fun and simple hands-on astronomy activity, learners construct a model of our place in the Milky Way Galaxy and the distribution of stars, with a quarter and some birdseed.

In this demonstration, learners observe vinegar and baking soda creating carbon dioxide (CO2) in a bottle. The gas is poured out of a bottle onto a candle flame, putting out the candle.

In a class demonstration, learners observe a simple water cycle model to better understand its role in pollutant transport.

Learners color and cut out a spiral-shaped snake. When they hang their snake over a radiator, the snake spins.

Learners see convection currents in action in this highly visual demonstration. Sealed bags of colored hot or cold water are immersed in tanks of water.

In this demonstration, learners observe vinegar and baking soda reacting to form carbon dioxide (CO2) gas.

In this demonstration, learners compare and contrast regular water ice to dry ice (frozen carbon dioxide). Both samples are placed in a solution of acid-base indicator.

In this physics activity, learners construct a small-scale version of a classic carnival game.

Learners cover a bottle with a balloon. When they immerse the bottle in warm water, the balloon inflates. When they immerse the bottle in a bowl of ice, the balloon deflates.

Learners develop an understanding of air pressure in two different activities.

This three-part activity consists of an activity that groups of learners develop themselves, a given procedure, and an optional demonstration.

Working in groups, learners model the continuous destruction and creation of ozone (O3) molecules, which occur in the ozone layer.