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Lesson Plan
Curated OER

Going out of Business: Pythagorean Theorem

For Teachers 8th - 9th
Students find the length of diagonals.  In this Pythagorean theorem lesson, students use the Pythagorean theorem to determine the length of diagonals. 
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Worksheet
Curated OER

Special Right Triangles

For Students 10th
In this special right triangles instructional activity, 10th graders solve 9 different problems related to measuring various types of right triangles. First, they find the values of x and y in each right triangle shown. Then, students...
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Lesson Plan
Curated OER

Elements Picture Assignment

For Teachers 9th - Higher Ed
Students identify the basic structural and decorative designs, create examples of line (horizontal/vertical/curved/diagonal), as well as identify and explain the difference between shape and form. Then, they identify and explain the use...
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Lesson Plan
Curated OER

Discovering the Area and Perimeter of Triangles

For Teachers 8th
Eighth graders identify how to find the area and perimeter of rectangles and triangles. They discuss their understanding of area and perimeter and how the two concepts are applied in the real world. Finally, 8th graders determine the...
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Lesson Plan
Curated OER

Interior Design: Poster Board Lines

For Teachers 10th - 12th
Observe different types of lines and apply skills to create posters demonstrating line directions. Discern the four different types of lines and the ambience each creates in a room. In groups, explain each line poster.
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Handout
Math Open Reference

Math Open Reference: Diagonals of a Square

For Students 9th - 10th
A complete reference guide to diagonals of a square. It provides definitions, examples, and interactive activities that enhance further explanation. Includes links to related topics.