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Lesson Plan
Curated OER

Rectangles and Trapezoids in the Coordinate Plane

For Teachers 7th - 9th
Students determine the missing vertices of quadrilaterals. In this rectangles and trapezoids lesson, students examine the characteristics of quadrilaterals. They identify the missing vertices of a quadrilateral on a coordinate plane.
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Lesson Plan
Curated OER

Shapes Galore!

For Teachers 1st
First graders create two-dimensional shapes. In this shapes lesson plan, 1st graders learn about different two-dimensional shapes. Students have many hands-on experiences with these shapes including the use of geoboards, shaving cream,...
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Lesson Plan
Curated OER

Amazing Fibonacci

For Teachers 8th - 12th
Students integrate the patterns of Fibonacci into music. In this geometry lesson plan, students apply the concepts of recursion, pattern and Phi or Golden Ratio to composing and playing music on various instruments. They lesson plan is...
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Lesson Plan
Curated OER

Comparing Area and Perimeter

For Teachers 9th - 11th
Students solve problems by finding the perimeter and area of an enclosed area. In this geometry lesson, students differentiate between the area and the perimeter. They see how they relate and how to use it to maximize an enclosed area.
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Lesson Plan
Curated OER

Perpendicular Lines in the Coordinate Plane

For Teachers 10th - 11th
Young scholars investigate the relationship between perpendicular and parallel lines on a coordinate plane. In this geometry lesson, students differentiate lines based on their slopes.
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Lesson Plan
Ohio Department of Education

I Can Name that Angle in One Measure! - Grade Eight

For Teachers 7th - 9th Standards
Collaborative groups work with geometry manipulatives to investigate conjectures about angles. They create a graphic organizer to use in summarizing relationships among angles in intersecting, perpendicular and parallel lines cut by a...
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Lesson Plan
Mathematics TEKS Toolkit

Grade 6: Exploring c/d = pi

For Teachers 6th Standards
Introduce your math class to the perimeter of a circle. Teach them that pi describes the relationship between the circumference and the diameter. As a hands-on investigation, pairs or small groups use string to compare these two values...
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Lesson Plan
Curated OER

Regular Polyhedra

For Teachers 10th
Tenth graders investigate the history of geometry and its different shapes. In this geometry lesson, 10th graders practice seeing three dimensional shapes and explain why there are only five polyhedra. They relate all the new materials...
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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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