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Dig a hole, line it, fill it with fresh water, and you have a water hole: a good place to study colonization.

In this activity, learners explore how salt water freezes in comparison to fresh water.

In this activity, learners use a microscope to examine three different microbes: bacteria, yeast and paramecia. Educator will need to prepare the yeast solution one day before the activity.

In this water pollution activity, learners create pond water cultures and investigate the effects of adding chemicals or natural nutrients.