Lesson Plan
Curated OER

Slope Right Up

For Teachers 6th - 8th
Students use triangles to find the length and slope of each side. After connecting the vertices, they add points based on their specific instructions. They use the Pythagorean Theorem to complete a worksheet to end the lesson.
Lesson Plan
Curated OER

Geometry In the Yard

For Teachers 5th - 7th
Students are responsible for creating a border around a triangular garden spot, of which they know the measurements for two sides. They use the Pythagorean Theorem to calculate the third side and complete the garden.
Lesson Plan
Curated OER

Linear/Planar Geometry - Week 5

For Teachers 12th - Higher Ed
In this linear and planar geometry worksheet, students use the Pythagorean Theorem, equation of a line, slope of a line and area formulas to solve problems. This three-page worksheet contains seven problems.
Lesson Plan
Curated OER

Roll It! Creating an Entrance Ramp

For Teachers 9th - 12th
Students explore the concept of triangles.  In this triangles lesson, students are to propose a plan for a ramp at their school.  Students use the Pythagorean Theorem and trigonometry to determine the length, height, and angle...
Lesson Plan
Curated OER

Area of a Triangle

For Teachers 9th - 11th
In this geometry worksheet, students solve problems by finding the area of a triangle. They are given the sides and asked to solve using the Pythagorean Theorem. There are 72 problems.
Lesson Plan
Pennsylvania Department of Education

Kites: On the Right Track

For Teachers Pre-K - K
Students use the Pythagorean theorem to discover the relationships between the lengths of sides of a right triangle. In this right triangles lesson plan, students use their reasoning and mathematical skills.
Lesson Plan
Curated OER

Investigating the Pythagorean Triples

For Teachers 9th - 10th
Students investigate the Pythagorean triples. In this geometry lesson, students solve for different parts of a right triangle. They identify the missing side or angle using the pythagorean theorem.
Lesson Plan
Curated OER

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...
Lesson Plan
Curated OER

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.
Lesson Plan
Curated OER

Pythagorean Theorem

For Teachers 9th - 12th
Students explore the Pythagorean Theorem. For this math lesson, students apply the Pythagorean Theorem to real life situations. Students find the hypotenuse and solve real world problems.
Lesson Plan
Curated OER

You Can't Go Wrong with a Right Triangle 2

For Teachers 3rd - 5th
Upper graders use the properties of right angle trignonmetry to measure objects such as the school flagpole. They solve real world problems using these properties.
Lesson Plan
Curated OER

Pythagorean Theorem Word Problems

For Teachers 6th - 8th
Students investigate the concept of the Pythagorean Theorem for geometry by using word problems. The challenge is for them to translate the words into the right measurements for a triangle looking for the longest side known as the...
Lesson Plan
Curated OER

Pythagorean Circles

For Teachers 9th - 10th
Students solve problems using smaller steps. In this geometry activity, students find the diagonals of rectangles and the area of the annulus between two circles. They are given the starting point and the radius.
Lesson Plan
Curated OER

Pythagoras's Theorem

For Teachers 5th - 6th
Students explore Pythagoras' Theorem. In this geometry lesson, students complete 4 pages of equations using Pythagoras's Theorem. Students complete 14 problems.
Lesson Plan
Curated OER

Number Theory

For Teachers 8th - 12th
Learners explore the concept of number theory. They discuss an assortment of number theory topics such as prime numbers, composite numbers, GCF, modular arithmetic, and others in a lecture style discussion. Pupils view videos about these...
Lesson Plan
Curated OER

Inequalities and Triangles

For Teachers 9th - 10th
Learners prove and apply theorems of triangle inequality and hinge theorem. In this geometry lesson plan, students will discuss which triangle is bigger and why. They will use theorems, such as Exterior Angle Inequality or the...
Lesson Plan
Curated OER

SuperShapes, Part 1; "Tri"ing Triangles

For Teachers 5th - 6th
An outstanding lesson on triangles awaits your math scholars. Learners focus on the triangle, which is the strongest of all polygons. They see the role that triangles play in the design of buildings, and learn about triangle...
Lesson Plan
Curated OER

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.
Lesson Plan
Curated OER

Investigating Pythagorean Triples

For Teachers 9th - 10th
Learners investigate and solve Pythagorean triples. In this geometry activity, students find the missing sides and angles of a right triangle. They graph right triangles and move the sides around to create different angles.
Lesson Plan
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Illustrative Mathematics

Eratosthenes and the Circumference of the Earth

For Teachers 9th - 12th Standards
The class gets to practice being a mathematician in ancient Greece, performing geometric application problems in the way of Eratosthenes. After following the steps of the great mathematicians, they then compare the (surprisingly...
Lesson Plan
Curated OER

Finding the Distance and Midpoint of a Line Segment

For Teachers 8th - 11th
Students use the Pythagorean formula to find the length of a line. Afterward, they explore the midpoint formula to determine the midpoint of a line with a non-zero slope on a coordinate plane. Students complete assigned problems and...
Lesson Plan
Curated OER

Geometric Applications

For Teachers 8th - 9th
In this geometry worksheet, students solve 5 word problems. Each of the problems involves finding one side of a right triangle. Story problems relate the Pythagorean Theorem to building ramps, shadows, and the length of a banner.
Lesson Plan
Curated OER

Diagonal Lengths

For Teachers 6th - 8th
Middle schoolers collect, organize, and analyze data while studying the Pythagorean Theorem, measure length and width of several rectangular objects, and compare the measured results to the calculated results.
Lesson Plan
Curated OER

Mathematical Proofs

For Teachers 9th - 12th
High schoolers explore the nature of mathematical proofs and mathematical inquiry. They complete the activity "Using the Pythagorean Theorem". They read selected articles and participate in class discussions.

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