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In this activity, learners explore the different salinities of various sources of water by taste-testing.

In this environmental education demonstration (page 6 of the PDF), learners will see a tangible representation of the scarcity of soil resources on earth.

In this activity, learners explore clouds and how they form.

Are balloons porous or non-porous? In this activity, learners watch an entertaining Mr. O video and conduct a simple experiment to find out.

In this activity (2nd activity on the page), learners explore how the nose is responsible for part of the flavor we taste in food.

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.

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

In this activity (p.3-4 of PDF), learners learn about disease transmission and antibiotic resistance.

Learners observe and discuss a vacuum cleaner as a model of a baghouse, a device used in cleaning industrial air pollution.

In this group activity, learners will explore the characteristics, functions and uniqueness of the mangrove tree.

This simple hands-on activity demonstrates why the sky appears blue on a sunny day and red during sunrise and sunset.