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Lesson Plan
Curated OER

Studying Special Segments in Triangles

For Teachers 8th - 10th
Learners investigate special segments in triangles. In this geometry lesson, students graph, compare, estimate and predict findings based on their data. They differentiate between similarity and congruence of triangles.
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Lesson Plan
Curated OER

Ship Shape

For Teachers 2nd
Second graders explore shapes. After reading books about shapes, 2nd graders describe the properties of various shapes. They identify shapes if they have been rotated, flipped, or slid. Students create shapes using drawings and geoboards.
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Lesson Plan
Curated OER

The Laws of Sines and Cosines Made Simple!

For Teachers 10th - 12th
Students explore the concept of law of sines and cosines. In this law of sines and cosines lesson plan, students construct a triangle tool from card stock and markers. Students use their triangle tool to aid in solving problems...
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Worksheet
Curated OER

Geometry Assessment-"Chapter 2"

For Students 7th - 8th
In this geometry worksheet, students match terms with definitions, and complete short answer questions about polygons and congruency.
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Lesson Plan
Curated OER

The Pythagorean Theorem, the Distance Formula, and Slope

For Teachers 9th - 12th
Students explore the concept of the Pythagorean Theorem. For this Pythagorean Theorem lesson, students derive the distance formula and slope of a line from the Pythagorean Theorem.
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Lesson Plan
Curated OER

How Tall Is That Flag Pole?

For Teachers 6th - 8th
Students examine various triangles and discuss how similar triangles have sides that are proportional. They utilize an ancient Egyptian method to determine the height of a flagpole.
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Lesson Plan
Curated OER

Perimeter and Area

For Teachers 5th
Fifth graders identify the area and perimeter of a rectangle. In this perimeter lesson, 5th graders use geoboards and rubber bands to construct various rectangles. Students use the formula to calculate area and perimeter of the...
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Lesson Plan
Curated OER

Geometry and Quilting

For Teachers 4th
Fourth graders combine geometry and language arts skills while examining quilt-making. After identifying the geometric shapes contained in quilts, they write stories to encompass the quilt border. Students conclude by creating and...
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Unit Plan
Curated OER

Wellington Fault Field Trip

For Teachers 3rd - 8th
Students take a field trip to Harcourt Park in California to view the results of river erosion and an active fault line. In this science lesson plan, students go to different parts of the park to discuss the results.
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Lesson Plan
Curated OER

Quiz: Astronomy

For Teachers 3rd
In this science worksheet, 3rd graders will focus on various aspects of astronomy. Students will respond to ten questions all pertaining to stars, constellations, planets, and our solar system.
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Lesson Plan
Curated OER

The Corner Problem

For Teachers 11th - Higher Ed
Students explore the concept of the corner problem. In this corner problem lesson, students use the TI-NSpire to determine the maximum length a rod can be and still pass horizontally around a corner. Students use similar triangles to...
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Lesson Plan
Curated OER

Drawing Lessons

For Teachers 6th - 8th
Pupils recognize and respond to the content of visual art using art vocabulary. They recognize the differences between art materials, techniques, and processes.
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Worksheet
Curated OER

Exploring Pendulums

For Students 7th - 10th
In this exploring pendulums worksheet, students experiment with pendulums they make in the lab. They vary the length of the strings and the weights to observe the changes in the pendulum's amplitude and frequency. They answer 3 analysis...
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Worksheet
Curated OER

Triangulation Experiment

For Students 11th - Higher Ed
In this triangulation worksheet, students solve and complete 11 steps of an experiment to determine the distance to a far away object using triangulation and trigonometry. First, they select a far away object and create a baseline far...
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Lesson Plan
Curated OER

The Truth About Triangles And Proofs

For Teachers 9th - 12th
Learners engage in a lesson that is about the classification of triangles and the mathematical proofs involved in working with them. They work on a variety of problems that are created by the teacher with the focus upon the importance of...
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Worksheet
Curated OER

Constructing Triangles

For Students 5th - 6th
In this constructing triangles online learning exercise, students construct thirteen triangles on paper first and then type in their answers on line. Students can check their answers as they go and the computer calculates the overall...
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Worksheet
Curated OER

Academic Algebra 2 Test

For Students 11th
In this algebra worksheet, 11th graders rewrite word problems using algebraic expressions. They solve problems using systems of equations. There are 14 problems on this worksheet.
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Lesson Plan
Curated OER

Properties of the Centers of a Triangle

For Teachers 9th - 12th Standards
High schoolers investigate properties of the four centers of a triangle and explore a special property of the circumcenter and orthocenter of a triangle. This lesson requires the use of Cabri, Jr.
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Lesson Plan
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Curated OER

Magazine Holder

For Teachers 1st - 5th
Students investigate ways to save our environment by creating a recycled product.  In this sustainable materials lesson, students create a magazine holder by recycling a large cardboard box and gift wrap or wallpaper.  Students explore...
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Lesson Plan
Curated OER

Rate of Photosynthesis

For Teachers 9th - 12th
Students investigate the rate of photosynthesis using elodea leaves. In this photosynthesis lesson plan, students place elodea in a test tube filled with water. They include baking soda and place the test tube under a lamp. Students...
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Worksheet
Curated OER

Similar Polygons

For Students 10th
In this similar polygons worksheet, 10th graders solve and complete 20 various types of problems. First, they solve each proportion. Then, students write a ratio expressing the slope of a line through each pair of points. In addition,...
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Worksheet
Curated OER

An application of the Parallax Effect

For Students 9th - 12th
In this parallax effect instructional activity, students observe 2 photographs taken of an active area of the sun by 2 STEREO satellites and 1 photograph taken of the same active area of the sun by the SOHO satellite. Students observe...
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Lesson Plan
Curated OER

Reflection: Student Worksheet

For Teachers 4th - 7th
In this math worksheet, students will work independently to trace a stencil on an x-axis. Then students will follow a procedure to trace the image on the horizontal line of reflection. Students will observe that reflections and rotations...
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Lesson Plan
Curated OER

Making Tangram Pieces by Folding Paper

For Teachers 3rd
Third graders follow directions to make a set of tangram pieces. After reading a story, they compare and contrast the differences between two-dimensional shapes. To end the lesson plan, they use the tangram pieces to create their own...