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Worksheet
Curated OER

Mixtures, Percentage and Equation Stoichiometry

For Students 10th - 12th
In this chemistry worksheet, students answer 2 problems on solution stoichiometry. They calculate the mass of products formed given a certain amount of reactant.
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Lesson Plan
Curated OER

Ecology: Effects of Land Use on Natural Streams

For Teachers 8th
Eighth graders examine how humans affect various ecosystems. In this ecology lesson, 8th graders discuss different ways that contaminants enter the stream. They explain the consequences of eutrophication in lakes.

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