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Lesson Plan
Curated OER

Rectangles and Parallelograms

For Teachers 3rd - 5th
Students compare parallelograms and rectangles.  In this comparing parallelograms and rectangles lesson, students make a chart to compare parallelograms and rectangles.  Students are given set of quadrilaterals and they must classify...
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Worksheet
National Council of Teachers of Mathematics

Perplexing Parallelograms

For Students 9th - 10th
In this geometry worksheet, young mathematicians divide a parallelogram into four, by choosing points along a diagonal.  Learners calculate the area of each parallelogram and look for any patterns that may emerge.  The one-page worksheet...
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Lesson Plan
Curated OER

Patch Tool

For Teachers Pre-K - 5th
Students use an Internet tool to explore shapes and how they combine.  In this patterns lesson, students create quilting patterns using various shapes.  Students recognize how the shapes fit together.
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Lesson Plan
Curated OER

Square Circles

For Teachers 7th - 9th
Students find the perimeter and diameter of given shapes.  In this square circles lesson, students measure circles and squares.  They explore the relationship between the circumference of a circle and its diameter.  Students examine the...