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Lesson Plan
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Pythagorean Theorem

For Teachers 9th - 10th
Students solve problems using the Pythagorean Theorem. In this geometry lesson plan,students identify the right angle, hypotenuse and legs of a right triangle. They find the missing sides using the ratios of the Pythagorean theorem.
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Worksheet
Curated OER

Similar Figures

For Students 4th - 5th
In this similar figures worksheet, students determine area and perimeter of rectangles and triangles, then explain their thinking. Answers included on page 2.
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Worksheet
Curated OER

Maximum and Minimum Points

For Students 11th - 12th
In this maximum and minimum points worksheet, students solve and complete 12 various types of problems. First, they find the area of the smallest triangle given the point of intersection. Then, students find the volume of a box that has...
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Worksheet
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The Baby Gate Problem

For Students 9th - 12th
In this secondary mathematics learning exercise, students expand a six-panel play yard by two-panels  Students determine the width of each panel and the area of the expansion. The one page learning exercise contains one problem with the...
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Lesson Plan
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Extra Practice 44: Solving Problems Using Quadratic Equations

For Teachers 9th - 10th
In this quadratic worksheet, students read short stories, write quadratic equations and use their problem solving skills to solve the equation. Students use the Pythagorean Theorem to find the length of a diagonal, dimensions of a...
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Lesson Plan
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The Edge of Home

For Teachers 9th - 12th
Students explain why some species of plants and animals occur in more than one area. They watch as the teacher puts an overlapping circles on the chalkboard, students are asked to predict what kinds of things they would expect to find in...
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Lesson Plan
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Putting the 'pi' in Pumpkin Pie

For Teachers 8th - 10th
Students use geometric formulas to divide a pumpkin pie. In this geometric formulas lesson plan, students review equations for area and circumference of a circle and divide a pumpkin pie to practice the formulas. Students use the...
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Lesson Plan
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The Centroid : Balancing the History

For Teachers 10th - 12th
Students discover the centroid of a triangle based on Euclid's constructions. They explore locus of points of a median. They understand properties of the segments that form the median and areas of the smaller sections formed by the median.
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Lesson Plan
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Geometry and Measurement

For Teachers 6th - 8th
Learners view a right triangle displayed by the teacher. Students measure legs and the interior angles of the triangle. They look for a pattern or relationship between the legs and angles. Learners use pegboards and string to create more...
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Lesson Plan
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Pythagorean Theorem and Problem Solving

For Teachers 9th - 10th
Students use the Pythagorean Theorem to solve problems. In this geometry lesson, students identify the properties of a right triangle. They find the missing side and angles of a right triangle.
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Lesson Plan
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Linear/Planar Geometry - Week 5

For Teachers 12th - Higher Ed
In this plane geometry worksheet, students 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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Lesson Plan
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Geometry Review

For Teachers 7th
Seventh graders explore basic geometric definitions involving angles, area, and circumference. To reinforce basic geometric concepts, they play a "lightning Flash" card game. Students discuss chores or jobs that require the use of...
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Lesson Plan
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Geometry w/o Figures - Week 7 (Basic Geometry Formulas)

For Teachers 10th - 12th
In this basic geometry worksheet, students use basic formulas of geometry to find the area of a polygons, the number of sides of a polygon, and sum of the angles of various polygons. This three-page worksheet contains eight problems.
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Lesson Plan
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Pythagorean Theorem Practice

For Teachers 7th - 10th
In this geometry skills worksheets, students examine 10 triangles and use the Pythagorean theorem to identity the lengths of the missing units.
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Worksheet
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Using the Pythagorean Theorem-4

For Students 7th - 8th
In this using the Pythagorean Theorem-4 instructional activity, students read the theorem and use it to find the missing side in ten right triangles.
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Worksheet
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Using the Pythagorean Theorem

For Students 7th - 8th
For this using the Pythagorean Theorem worksheet, students find the length of the missing side for ten right triangles using the Pythagorean Theorem.
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Lesson Plan
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Origami Cube

For Teachers 9th - 10th
Pupils compare two lengths using the area of a square. In this geometry lesson, students solve problems using ratio and proportion of the two shapes. They solve equations by taking the square root of both sides.
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Lesson Plan
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Some More Trigonometry

For Teachers 9th - 10th
Students define the law of cosine and its correct usage. In this trigonometry activity, students define the law of Heron's area formula and use it to solve problems. They review other trigonometric values and identify the identities.
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Lesson Plan
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Pythagorean Triple

For Teachers 8th - 10th
Students investigate the properties of the Pythagorean Theorem. In this geometry lesson, students identify the missing angles and sides of a right triangle. They label the hypotenuse and legs of a right triangle correctly.
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Lesson Plan
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The Trig To Soccer

For Teachers 9th - 12th
Learners are given the background information to open the lesson: Suppose a penalty kicker in soccer could choose where he could kick from, as long as he stayed on the back line of the penalty area. Would he have a better chance of...
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Lesson Plan
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Law of Sines and Cosines

For Teachers 10th - 11th
Students solve problems using sine and cosine. In this precalculus lesson, students apply the properties of sine and cosine to solve non-right triangle problems. They use Heron's Law to find the area of a shape.
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Lesson Plan
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CSI Investigation of Congruence and Similarity

For Teachers 9th - 12th
Students differentiate between similarity and congruence using polygons. In this geometry lesson, students label triangles based on their properties. They find missing sides and angles using the interior sum theorem.
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Lesson Plan
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Storefront Signs

For Teachers 6th - 8th Standards
Learners practice finding the areas and patterns within a square and explore the concept of quadratic functions. They observe and record the area values in a table, plot a graph of Area versus Distance and complete a variety of student...
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Lesson Plan
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Spot The Pattern

For Teachers 7th - Higher Ed
Students study integers.  In this math lesson students complete several worksheets on arithmetic series, triangles and word problems. 

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