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This is written as a static display, but can easily be adapted to a hands-on experiment for learners to conduct.

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

In this chemistry activity, learners explore whether matter is created or destroyed during a chemical reaction. They will compare the weight of various solutions before and after they are mixed.

In this activity, learners mix ingredients in a plastic bag, and then identify three characteristics of a chemical reaction: production of heat, color change, and production of a gas.

This laboratory exercise is designed to show learners how DNA can easily be extracted from onion cells using simple materials.

In this activity (page 26 of the PDF), learners make observations, formulate hypotheses and design a controlled experiment, based on the reaction of carbon dioxide with calcium hydroxide.

This laboratory exercise is designed to show learners how DNA can easily be extracted from yeast using simple materials.