Curated OER
This Building is Tall
Learners calculate the perimeter of shapes. In this geometry lesson, students relate properties of polygons to the real world. They find length, midpoint and slope.
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Chapter 6: Geometry Perimeter and Area
In this perimeter and area activity, students find the perimeter of various polygons. They compute the perimeter, surface area, circumference, and volume of given figures. Students explore trigonometric ratios. This twelve-page...
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Investigating Pythagorean Triples
Students investigate and solve Pythagorean triples. In this geometry lesson, students find the missing sides and angles of a right triangle. They graph right triangles and move the sides around to create different angles.
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Understanding Fundamental Trigonometric Identities
Young scholars are introduced to the basic trigonometric identities. Using a diagram, they discover why the parts of the unit circle as named as they are and use equations to finalize the Pythagorean trigonometric identities. They also...
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The Geometry of Means
In this geometry worksheet, pupils are given a rectangle and a square. They verify ratios when given equal perimeters or areas. Students are given adjacent squares. They find the distance between the centers, and identify the means they...
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Ten Multiple Choice Length Problems
In this distance worksheet, students calculate the lengths of sides and diagonals of figures. Students also compute lengths in shadow problems. The solutions are provided by clicking on the "show answers" tab at the bottom of the page.
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New York State Testing Program-Grade 8
In this eighth grade worksheet, 8th graders solve problems that represent the grade level expectations for mathematics in New York State. The twenty-four page worksheet contains sixteen free response questions. Answers are not provided.
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A Lesson on the Root Spiral
Students create lines and shapes with a compass and a straight edge. In this geometry lesson, students investigate square roots, irrational numbers and spirals. They explore nature to see the shapes representing mathematics and geometric...
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Linear/Planar Geometry - Week 5
In this plane geometry worksheet, learners combine the basis of plane geometry and linear problems to solve problems. They determine total surface area, the length of a line, and the sum of the edges of a three-dimensional figure. This...
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Mathematical Wackie Wordies
In this word instructional activity, 9th graders examine pictures and write a mathematical phrase to describe the picture. This one-page instructional activity contains 25 problems. Answers are provided.
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Calculating the Shortest Distance Between Two Points
Ninth graders calculate the distance between two points.
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Slopes, Distances, and Map Keys
Students explore Rise and Run. In this math lesson, students use Rise and Run to find given slopes, they will use the slopes to calculate distances from point to point on graph paper.