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Lesson Plan
Curated OER

Learning Unit: The Pythagorean Theorem

For Teachers 8th - 10th
Middle and high schoolers research the life of Pythagoras and the Pythagorean theorem. They write a short biography of Pythagoras and learn to apply the theorem in their study of right triangles.
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Worksheet
Curated OER

Inverse Trig Functions

For Students 10th - 11th
Learners solve and graph 10 different problems that are the inverses of various trig functions. First, they determine which equation is equivalent to a given equation. Then, they find an angle of a right triangle, given its leg lengths....
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Interactive
Curated OER

7-2 Self Check Pythagorean Theorem Multiple Choice

For Students 8th - 10th
Middle and high schoolers use the Pythagorean Theorem to determine the length of the sides of a right triangle. They solve distance problems. This one-page worksheet contains 10 multiple-choice problems. This is self-checking worksheet.
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Worksheet
Curated OER

Drawing Angles

For Students 4th - 5th
Get out those protractors! Once geometers can identify obtuse, acute, right, and straight angles, get them to measure and draw their own. There are six boxes here, each with an angle measurement. Learners use a protractor to draw the...
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Worksheet
Curated OER

Sorting 2-Dimensional Shapes

For Students 2nd - 4th Standards
Some shapes have square corners, and some do not. Scholars participate in a sorting activity as they determine if these 12 shapes have square corners, categorizing them based on this attribute. Encourage geometers to draw the square into...
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Worksheet
Curated OER

Is It Right Angled Triangle?

For Students 7th - 8th
In this right angle triangle worksheet, students check whether the four given triangles are right angled triangles using the Pythagorean Theorem.
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Lesson Plan
Curated OER

Getting it Right! An Investigation of the Pythagorean Theorem

For Teachers 5th - 8th
In order to learn about the Pythagorean Theorem, young mathematicians investigate relations and patterns between different sides of a right triangle to look for possible relations among the squared sides. Once they have established the...
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Lesson Plan
Curated OER

Applying Special Right Triangles

For Teachers 10th
In this geometry worksheet, 10th graders use the theorems regarding right triangles to find the missing length in a special right triangle. The one page worksheet contains eleven questions. Answers are included.
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Worksheet
Curated OER

Number Sense and Numeration: Square Roots

For Students 8th
In this square roots worksheet, 8th graders solve 14 different types of problems to include determining the square root of a number of problems, determining the area of a rectangle and the length of a side of a square with the same...
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Worksheet
Curated OER

Revise Properties of 3-D Shapes

For Students 5th - 6th
In this properties of 3-D shapes worksheet, students identify shape, faces, edges, vertices, and right angles. In this fill in the blank worksheet, students answer thirty-six problems.
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Worksheet
Curated OER

In the Right Order

For Students K - 1st
What comes first? Practice order of events with this sequencing activity. Learners examine two sets of pictures and write 1st, 2nd, and 3rd beneath the corresponding pictures. Encourage them to explain their reasoning, as there may be...
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Worksheet
Curated OER

Square Corners

For Students 2nd - 4th Standards
Are these angles greater than, less than, or equal to a square corner? Using a visual guide, young geometers label 16 angles into one of these three categories. Use this before introducing the terms acute, obtuse, and right angle, but...
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Worksheet
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DK Publishing

Using a Protractor

For Students 3rd - 5th Standards
Learn how to measure acute, right, and obtuse angles with a protractor. After reviewing the way the protractor works, fourth graders measure nine angles on their own. For extra practice, have them measure different angles in their...
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Lesson Plan
Curated OER

Roofing and Right Triangles

For Teachers 9th - 11th
Students use models and symbols to represent properties of the Pythagorean Theorem. In this right triangle lesson plan, students connect real jobs to properties of right triangles. They solve word problems applying the correct ratios and...
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Lesson Plan
Curated OER

Which Triangles are Right

For Teachers 9th - 10th
Learners apply properties of right triangles to solve problems. In this geometry activity, students identify axioms and theorems using examples.
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Worksheet
Curated OER

Identify the angles - acute, right, obtuse, and straight

For Students 6th - 10th
In this angles activity, students draw the angles described to them and then decide whether it is an acute, right, obtuse, or straight angle. Students complete 4 problems.
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Worksheet
Curated OER

Angle Comparison to Right Angles

For Students 5th - 6th
In this angles worksheet, students solve 4 problems in which an angle is analyzed and measured. Students tell if each angle is greater than, less than or equal to a right angle.
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Lesson Plan
BBC

Rights and Responsibilities

For Teachers 7th - 12th
Middle and high schoolers engage in a instructional activity about rights and responsibilities, and the differences between them. After a class discussion, pupils break off into pairs and come up with mimes that respect or abuse a...
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Lesson Plan
EngageNY

The Converse of the Pythagorean Theorem

For Teachers 8th Standards
Is it a right triangle or not? Introduce scholars to the converse of the Pythagorean Theorem with a lesson that also provides a proof by contradiction of the converse. Pupils use the converse to determine whether triangles with given...
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Assessment
Balanced Assessment

Refiguring Pythagoras

For Students 6th - 8th
Why was Pythagoras so obsessed with squares? The assessment task posits the question of whether the geometric interpretation of the Pythagorean Theorem holds for figures other than squares. Scholars first consider the case of semicircles...
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Worksheet
Curated OER

Angles ~ Right Angles

For Students 9th - 10th
Have your class review how to identify right angles. Learners identify right angles, and then write the number of angles found in each shape.
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Lesson Plan
Curated OER

Right Triangle Geometry

For Teachers 9th - 11th
Students study the basic principles of right triangle geometry needed to solve for unknown values of a right triangle. They apply and master the principles of right triangle geometry by solving problems.
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Worksheet
Curated OER

Math - Left and Right

For Students 1st - 2nd
For this left and right worksheet, students complete number, letter, and coloring arrows activities that identify left and right directions. Students complete 4 activities.
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Worksheet
Curated OER

Right Triangles

For Students 10th
In this right triangles learning exercise, 10th graders solve 6 various problems and figures related to right triangles. First they identify and describe the 3 theorems and 1 postulate stated that prove 2 right triangles congruent if one...

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