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In this activity, learners observe colors in the flame of a burning candle to explore connections between matter, light, color and temperature -- basic concepts of matter and energy.

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

This investigation provides learners with a hands-on activity that simulates the changing relationship of surface areas-to-volume for a growing cell.

Learners build simple catapults and use them to launch cotton balls.

Learners construct and launch paper helicopters.

In this activity, learners create a model using metric measuring tapes and atmosphere composition data.

In this math-based activity, learners model the intensity of light at various distances from a light source, and understand how astronomers measure the amount of sunlight that hits our planet and othe

In this chemistry activity, learners make indicator solution from red cabbage. Then, learners test everyday foods and household substances using the cabbage juice indicator.

Water treatment on a large scale enables the supply of clean drinking water to communities.