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Science challenge

Weekly Science Challenge: Yeast rising

What makes this well-known fungus grow the most? We’ll show you how to experiment with it and then use your results to bake delicious bread!

Weekly Science Challenge: The Disappearing Log

Weekly Science Challenge: The Disappearing Log

Investigate what critter or natural process got to the fallen log in this science mystery challenge. Use a suspect guide and your detective skills to help solve the case of the disappearing log.

Science Challenge: Finding Aquatic Insects

Aquatic macroinvertebrates help us understand the health of our waterways. In this lesson, Mary ellen shows you how to locate them within a stream or river and identify what’s there.

Science Challenge: Water Speed Test

Learn how to test the speed of flowing water using materials from around the house. This experiment is often the foundation of many other water quality and species population experiments in waterways.