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Lesson Plan
Curated OER

Proving Pythagoras

For Teachers 8th - 10th
Young scholars prove the theorem of Pythagoras. For this Pythagorean Theorem lesson, students define the different parts of a right triangle. They use the Pythagorean Theorem to solve for the missing sides and angles of a right triangle.
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Lesson Plan
Curated OER

Why Doesn't SSA Work?

For Teachers 10th - 11th
Students investigate the relationship between angles and their sides. In this geometry instructional activity, students prove why SSA does not work as a true angle side relationship theorem.
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Lesson Plan
Curated OER

Deric's Blotto

For Teachers 9th - 10th
Students solve the handshake problem and investigate triangular numbers. In this geometry lesson, students investigate Blotto games as they apply concepts of triangles and geometric theorems.
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Lesson Plan
Curated OER

Shapes of Africa

For Teachers 1st
First graders learn the names of geometric shapes and about African cultures. In this geometry and culture instructional activity, 1st graders describe real world objects and learn to name them with geometric terms such as square,...
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Lesson Plan
Curated OER

A Penny for Your Height

For Teachers 5th - 6th
Students investigate measurement.  In this fifth/sixth grade mathematics lesson, students explore the relationship between inches and centimeters.  Students measure their height in inches or centimeters and convert the...
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Lesson Plan
Curated OER

Cockroach Slope

For Teachers 10th - 11th
Students identify the slope of linear functions. In this slope lesson, students collect data and graph it. They write equations with no more than two variables and use technology to explain their data.
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Lesson Plan
Curated OER

Which Triangles are Right

For Teachers 9th - 10th
Students apply properties of right triangles to solve problems. For this geometry lesson, students identify axioms and theorems using examples.
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Lesson Plan
Think Map

Know Your Polygons!

For Teachers 3rd - 5th Standards
Shape shifters recognize characteristics of polygons. Embracing language arts skills in addition to math, they use a thesaurus to pinpoint specific attributes of a set of polygons. They also participate in a 21-question guessing game...
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Lesson Plan
Curated OER

Measuring Angles

For Teachers 6th
Sixth graders identify and measure right, acute, obtuse, and straight angles. In this geometry lesson plan, 6th graders review the definition of each angle and are shown examples of each specific angle. Students use toothpicks, gumdrops,...
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Lesson Plan
Curated OER

Area Unit

For Teachers 9th - 11th
Students solve the area for parallelograms,squares, rectangles, trapezoids, and triangles. In this geometry lesson plan, students compare and contrast two dimensional shapes and apply their properties to solving real life scenarios. This...
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Lesson Plan
Curated OER

Ratios, Proportions and Percents

For Teachers 5th
Fifth graders complete 3 activities centered around percents. In this ratios, proportions and percents lesson, 5th graders create designs on grid paper that illustrate a variety of percents, solve percent problems mentally, and use...
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Lesson Plan
Curated OER

Sizing Up the Supersize Croc

For Teachers 6th - 8th
Students examine and compare traits of humans and crocodiles.  For this crocodile lesson students use a ratio to estimate the height of a person and compare that to a crocodile. 
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Lesson Plan
Curated OER

Line 'Em Up!

For Teachers 3rd - 5th
Learners find coordinate points on a grid and create a line graph with those points. This lesson should ideally be used during a unit on various types of graphs. They make and use coordinate systems to specify locations and to describe...
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Lesson Plan
Curated OER

Line Hunt

For Teachers K - 3rd
Students identify lines in everyday images.  In this art analysis lesson, students practice drawing diagonal, vertical and horizontal lines on pieces of chart paper.  Students examine a page from a magazine and identify the...
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Lesson Plan
Curated OER

Calculation the Cricumference of Earth using "Google Earth"

For Teachers 8th
Eighth graders investigate properties of circles.  In this eight grade mathematics lesson, 8th graders apply proportional reasoning to data gathered with “Google Earth” to calculate equatorial and polar circumference of the...
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Lesson Plan
Curated OER

Indirect Proof and Inequalities in One Triangle

For Teachers 10th
In this geometry worksheet, 10th graders order the sides and angles of a triangle and determine the range of the third side of a triangle given the lengths of two sides.  The one page worksheet contains sixteen questions. ...
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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...
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Lesson Plan
Curated OER

Application of Graph Theory

For Teachers 9th - 11th
Students investigate different online tutorials as they study graphing. In this graphing lesson, students apply the concept of graphs cross curricular and use it to make predictions. They define the purpose and theories behind graphs.
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Lesson Plan
Curated OER

Gravity, Angles, and Measurement

For Teachers 10th - 11th
Students relate math to real life scenarios. In this geometry lesson, students launch a ball tracking each launch using a graph. They analyze their data for speed, angles and distance, trying to improve on each launch.
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Lesson Plan
Curated OER

Measuring Angles & Segments

For Teachers 10th - 12th
Students view a PowerPoint for a warm-up lesson. They practice measuring around the classroom, measuring such things as the length and width of a desk, pencil, door, and book. Students use a website to practice measuring angles.
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Lesson Plan
Curated OER

Transformations and Exponential Functions

For Teachers 10th
Tenth graders study graphing exponential functions. In this transformations lesson plan, 10th graders apply inquiry to determine how changes to a parent function affect its graph. Students analyze transformed graphs and generate the...
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Lesson Plan
Curated OER

Building Buildings

For Teachers 7th
Seventh graders investigate 2-D and 3-D objects. In this geometry lesson plan, 7th graders begin to understand spatial reasoning. Students look at pictures of the NYC Skyline and discuss what it looks like from different views. Students...
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Lesson Plan
Curated OER

Pythagorean Theorem

For Teachers 7th - 8th
Students discover the Pythagorean Theorem.  In this discovering the Pythagorean Theorem lesson, students measure the lengths of various triangles to the nearest centimeter. Students record their measurements in a table. ...
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Lesson Plan
Curated OER

Equations in Motion: Design and construct a mobile

For Teachers 6th - 9th
Learners participate in a lesson that covers the concepts of solving equations and inequalities. To master the concept they must demonstrate visually and verbally how both sides of an equation must be balanced. They construct a balanced...

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