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Worksheet
Curated OER

Evaluating Expressions

For Students 7th - 8th
In this evaluating expressions worksheet, students solve and complete 27 various types of problems. First, they evaluate each expression listed. Then, students simplify the expression and write the answer using only positive exponents.
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Lesson Plan
Curated OER

Nanofibers: Measuring the Visible to Understand the Invisible

For Teachers 9th - 12th
Students compare the size and shape of tubes that can be measured, to the size and shape of "nanowhiskers" that are too small to see. They practice measuring, calculating and graphing the ratio of circumference to diameter of a circle,...