The Effects of Agricultural Fertilizer Runoff Upon Aquatic Ecosystems
Students measure the toxic levels of runoff and discuss the effects it would have on the aquatic system. In this runoff lesson plan, students answer questions to how runoff would affect the animals in an aquatic system.
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Using Environmental Models to Determine the Effect of Acid Rain on an Ecosystem
Demonstrate to your middle school science learners how chalk breaks down in a weak acid. Discuss what affects acidic rain might have on ecosystems. Lab groups then choose one of two questions: "How does acid precipitation affect an...
7th - 8th Science
What's Hidden Among the Tallest Trees on Earth?
Hidden hundreds of feet above the ground in the redwoods of Northern California is a whole world that was just waiting to be discovered. This video tells the story of Stephen Sillett who, inspired by his grandmother, set out to explore...
5 mins 6th - 12th Science CCSS: Adaptable
Feedback Loops: How Nature Gets Its Rhythms
Explore the role of feedback loops in maintaining nature's delicate balance with this short science video. Introducing the concepts of positive and negative feedback, multiple examples are presented that explore the intricate web of...
5 mins 7th - 12th Science CCSS: Adaptable