Lesson Plan
Curated OER

Proof of the Pythagorean Theorem Using Transformations

For Teachers 9th - 12th Standards
Middle and high schoolers construct a triangle using Cabri Jr. They construct squares on each of the legs and hypotenuse of the triangle. Pupils show that the area of the squares on the leg equal the area of the square on the hypotenuse.
Interactive
Shodor Education Foundation

Pythagorean Explorer

For Students 6th - 12th Standards
Make sure the measurement is right. The interactive provides right triangles with a missing side measurement. Pupils use the given sides and the Pythagorean Theorem to calculate the length of the missing side. After entering the length,...
Lesson Plan
Curated OER

Basic Trigonometric Ratios

For Teachers 11th - 12th
In this trigonometric ratio worksheet, students determine the length of a side of a right triangle, or the measurement of angles using trigonometric ratios. This one-page worksheet contains 24 problems. Answers are provided at the bottom...
Worksheet
Curated OER

Pythagorean Theorem

For Students 9th - 12th
In this Pythagorean theorem worksheet, students use the Pythagorean theorem to find the length of a missing side of a right triangle.  This two--page worksheet contains 15 problems.
Lesson Plan
Curated OER

30-60-90 Right Triangles in Cabri Jr.

For Teachers 9th - 12th Standards
Young mathematicians draw and label right triangles using Cabri Jr. technology. They create other special right triangles and identify the length of the hypotenuse and each leg. Students explore the ratios to determine how the hypotenuse...
Lesson Plan
Curated OER

Investigating Segments in a Right Triangle

For Teachers 9th - 12th Standards
High schoolers explore the concept of right triangles as they construct a right triangle using Cabri Jr. Learners find the midpoint of the hypotenuse and construct a line from the midpoint to the vertex of the right angle. They then...
Worksheet
Curated OER

A-Z Tech Math Final Exam Study Guide

For Students 9th - 10th
In this math study guide, students solve problems previously studied throughout the school year. Problems include, but are not limited to, volume, area, perimeter, square roots, binomials, trinomials, graphing, and consumer math. This...
Worksheet
Math eBook

Centroid of Triangles

For Students 9th - 11th
For this centroid of triangles worksheet, students use given information to determine the centroid of a triangle. They identify the point through which all medians of the triangle pass. This five-page worksheet contains approximately 20...
Lesson Plan
Curated OER

The Pythagorean Theorem

For Teachers 9th - 11th
Students create both a visual and formal proof of the Pythagorean theorem, as well as view four additional geometric demonstrations of the theorem. They construct a square and conjecture the following theorem: The sum of the areas of...
Lesson Plan
Curated OER

Pythagorean Theorem

For Teachers 8th
Eighth graders draw right triangles and identify the parts of a right triangle: right angle, interior and exterior angles, hypotenuse and legs. They predict and identify any relationships that exist between the sides of a right...
Worksheet
Curated OER

The Pythagorean Theorem

For Students 9th
In this Pythagorean theorem activity, 9th graders solve and complete 8 different problems that include using the Pythagorean theorem to solve. First, they find the missing measure in each right triangle. Then, students make a drawing and...
Worksheet
Curated OER

The Pythagorean Theorem

For Students 9th
In this Pythagorean theorem worksheet, 9th graders solve and complete 16 different problems that include using the Pythagorean theorem to solve each one. First, they find each missing measure given the hypotenuse of a right triangle....
Worksheet
Curated OER

Trigonometric Ratios

For Students 10th
In this trigonometric ratios activity, 10th graders solve 9 different problems that include determining the trigonometric ratios of each triangle. First, they determine the sides and angles of a right triangle that is shown in each...
Worksheet
Curated OER

Trigonometry Ratios in Right Triangles

For Students 10th
For this trigonometry ratios in right triangles worksheet, 10th graders solve 6 different right triangle problems. First, they find the values of x and y in each triangle, rounding each to the nearest tenth. Then, students locate the...
Worksheet
Curated OER

Geometric Mean and the Pythagorean Theorem

For Students 10th
In this geometric mean and the Pythagorean Theorem worksheet, 10th graders solve 16 different problems that determine the geometric mean of numbers by applying the Pythagorean Theorem. First, they find the geometric mean between each...
Lesson Plan
Curated OER

The Pythagorean Theorem

For Teachers 7th - 9th
Students explore the concept of the Pythagorean Theorem.  In this Pythagorean Theorem lesson, students discuss how the Pythagorean Theorem is used in their lives.  Students imagine building a lean-to that is 3 ft. high and 4...
Unit Plan
CK-12 Foundation

Ck 12: Algebra: Pythagorean Theorem and Its Converse

For Students 9th - 10th
[Free Registration/Login may be required to access all resource tools.] Determine if three side lengths make a right triangle, and given the length of its legs, find the length of a right triangle's hypotenuse.
Article
Cuemath

Cuemath: Adjacent

For Students 9th - 10th
Let's read about the word of adjacent, look at examples, and learn how angles can be adjacent. Check out the interesting examples to know more about this lesson and try your hand at solving a few interactive questions at the end of the...
eBook
CK-12 Foundation

Ck 12: Interactive Geometry: 1.7 the Pythagorean Theorem

For Students 9th - 10th Standards
Explore and discover the Pythagorean theorem.
Handout
Purple Math

Purplemath: The Unit Circle

For Students 9th - 10th Standards
Relates the unit circle to the method for finding trig ratios in any of the four quadrants. Demonstrates how the unit circle might be useful.