Lesson Plan
Curated OER

Pythagorean Theorem and Problem Solving

For Teachers 9th - 10th
Young scholars 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.
Worksheet
Curated OER

The Pythagorean Theorem

For Students 9th - 11th
For this geometry worksheet, students solve missing parts of a triangle using the Pythagorean Theorem. There are 19 questions with an answer key.
Lesson Plan
Curated OER

Pythagorean Triple

For Teachers 8th - 10th
Students investigate the properties of the Pythagorean Theorem. In this geometry instructional activity, students identify the missing angles and sides of a right triangle. They label the hypotenuse and legs of a right triangle correctly.
Worksheet
Curated OER

Trigonometry

For Students 11th - 12th
In this trigonometry worksheet, students find the missing angles for given triangles. They use the trigonometric ratios to solve the problems.
Worksheet
Curated OER

Informal Geometry

For Students 8th - 12th
Middle and high schoolers solve and complete 29 various types of problems. First, they match each name with its correct formula. Then, students find the length of the missing side and the distance between the two points given. In...
Lesson Plan
Curated OER

Calculating the shortest distance between two points

For Teachers 8th
Eighth graders find the length of the third side of a right triangle.
Lesson Plan
Curated OER

CSI Investigation

For Teachers 8th - 10th
Students solve real life situation using the Pythagorean Theorem. In this geometry lesson, students calculate the length, midpoint and slope of segments. They solve word problems using properties of square roots.
Lesson Plan
Curated OER

Picking Pythagoras

For Teachers 6th - 9th
Students discover that side measurement is used in determining angle classification of a triangle. By squaring sides, they predict whether triangles be right, obtuse, or acute. They prove the Pythagorean Theorem and use it to solve...
Interactive
Curated OER

Similar Figures

For Students 7th - 10th
For this similar figures worksheet, students identify the meaning of similar, corresponding sides, and congruent.  They use proportions to find the length of a missing side.  Students dilate given figures according to a scale...
Lesson Plan
Curated OER

Pythagorean Theorem

For Teachers 6th - 8th
Need a few extra examples on using the Pythagorean Theorem? Here is a lesson that uses pictures of New York City’s buildings as a model, and young architects find the height of the building. Consider adding more examples to further...
Worksheet
Curated OER

Ratios Involving the Hypotenuse

For Students 10th
In this trigonometry worksheet, 10th graders calculate the ratios as it relates to the hypotenuse of the triangle. They find the missing leg, angle or hypotenuse. There are 6 questions with this worksheet.
Lesson Plan
Curated OER

The Pythagorean Theorem

For Teachers 10th
In this geometry worksheet, 10th graders apply the Pythagorean Theorem as they determine the length of the missing leg or hypotenuse in right triangles.  The one page worksheet contains twelve questions.  Answers are...
Worksheet
Curated OER

Similar Figures

For Students 10th
In this geometry worksheet students explore similar polygons and determine measure of missing sides and angles. Students use indirect measurement with similar triangles and determine the area and volume of similar figures. The seven...
Lesson Plan
Curated OER

Pythagorean Triples

For Teachers 9th - 12th Standards
Teach how to solve problems with right triangles. Young scholars use the Pythagorean Theorem to identify missing sides and angles. Then, they will define and use the Pythagorean Triples to solve problems.
Lesson Plan
Curated OER

Sin, Cos and Tangent

For Teachers 9th - 10th
Young scholars find the identity o sine, cosine and tangent. In this precalculus lesson, students solve and identify the different parts of a right triangle. They use the ratios of the Pythagorean Theorem to find the missing side or angle.
Lesson Plan
Curated OER

Launches for the Stars

For Teachers 7th - 8th
Learners are introduced to rockets and the space shuttle program. After viewing a 1960s show, they examine the role and history of NASA and how it evolved into having a space shuttle program. In groups, they create their own model rocket...
Lesson Plan
Curated OER

Exploring Geometric Mean

For Teachers 8th - 10th
Learners solve problems using geometric means. In this geometry instructional activity, students create altitudes in right triangles. They use Cabri software to move the triangle around and observe different sides and angles.
Lesson Plan
Curated OER

Exploring Geometric Mean

For Teachers 8th - 10th
Student identify the solution using geometric mean. In this geometry lesson, students create right triangles where the altitude of the triangle is the side containing the right angle. They modify shapes using Cabri software and observe...
Lesson Plan
Curated OER

Trig is SOH Easy!

For Teachers 7th - 10th
Students derive the six trigonometric identities. In this trigonometry lesson, students review the parts of a right triangle and use the Pythagorean theorem as a guide to find the trig identities. They find sine, cosine and tangent ratios.
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

Pythagorean Theorem

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

Geometry In the Yard

For Teachers 5th - 7th
Pupils 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.
Unknown Type
Khan Academy

Khan Academy: Find Angles in Triangles

For Students 7th - 8th Standards
Find missing angle measures using the properties of triangles. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video, or receive hints.
Interactive
Government of Alberta

Learn Alberta: Math Interactives: Exploring and Solving Triangles

For Students 6th - 8th Standards
This multimedia Learn Alberta math resource focuses on the many triangles that are found in our everyday environment. The accompanying interactive component asks students to find triangles in a picture and to solve for the missing angles...