Worksheet
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The Triangles Problem

For Students 10th
In this geometry worksheet, 10th graders explain how two triangles can have 5 parts of the other triangle and still not be congruent. This is a word problem with an answer key.
Lesson Plan
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The Law of Sines

For Teachers 11th - 12th
Students define the laws of sine as it relates to a right triangle. In this trigonometry lesson, students identify the properties of sine to help then find mixing sides of a right triangle. They also solve for the missing angles.
Lesson Plan
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Investigating AAS

For Teachers 9th - 10th
Students investigate the theorems of ASA, AAS, AAA and ASA. In this geometry lesson, students discuss the theorems of triangles and how it is used to solve for missing sides or angles. They review how two angles are formed by two rays...
Lesson Plan
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Similar triangles

For Teachers 10th
Tenth graders investigate the theorems of ASA, AAS, AAA and ASA. In this geometry lesson, 10th graders discuss the theorems of triangles and how it is used to solve for missing sides or angles. They review how two angles are formed by...
Lesson Plan
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Why Doesn't SSA Work?

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

For Teachers 9th - 12th Standards
High schoolers identify properties of triangles. In this geometry lesson, students differentiate between similar and congruent triangles. They use the umber of sides to help define the angle of the polygon.
Lesson Plan
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Triangle Congruence

For Teachers 9th - 11th
Students use web applet to create congruent triangles. In this geometry lesson, students differentiate between congruent and similar. They create shapes online and drag those shapes around to create visuals of triangles.
Lesson Plan
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The Arts of Africa, Asia and the Middle East: An Exploration of Art, Music and Film

For Teachers Higher Ed
Students examine the arts of the Middle East, Asia and Africa. After viewing films, they discuss the views of the various characters and identify the differences in the cultures presented. They also use the internet to evaluate various...
Lesson Plan
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Teaching about Islam

For Teachers 9th
Ninth graders explore the effects of globalization on the Global South. In this World History lesson plan, 9th graders research a specific Islamic region.  Students create a presentation that explain the effects of globalization on...
Lesson Plan
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Area of a Triangle

For Teachers 10th - 11th
Students solve the area of triangles. In this precalculus activity, students are given two sides of a triangle and asked to calculate the area. They apply the law of sine and the side-angle-side area formula to solve.
Lesson Plan
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Parts of a Plant

For Teachers K
Students explore biology by listening to an in-class lecture. In this plant science lesson, students sing songs with their classmates regarding anatomical parts of a plant and create plants from arts and crafts materials. Students listen...
Lesson Plan
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Why can't We Use SSA to Prove Triangles Congruent?

For Teachers 9th - 10th
Young scholars investigate triangles and congruences. In this geometry lesson plan, students differentiate between inductive and deductive reasoning. They differentiate between similar and congruent triangles.
Worksheet
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Proving Triangles Congruent

For Students 10th
In this proving triangles congruent worksheet, 10th graders solve 5 different problems that include proofs and proving congruence in triangles. First, they determine which postulate can be used to prove the triangles congruent and mark...
Worksheet
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Law of Sines and Law of Cosines

For Students 9th - 11th
In this sine and cosine worksheet, students use the law of sines and law of cosines to find the required part of a triangle. Examples and explanations are provided. This three-page worksheet contains 24 problems. Answers are listed at...
Lesson Plan
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Congruent Triangles Postulates

For Teachers 3rd - 4th
Young scholars discover three lettered postulates that prove triangles congruent.
Lesson Plan
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Similar Triangles

For Teachers 9th
Ninth graders find the height of every day objects using techniques learned through postulates that allow triangles in a problem to be similar. They calculate the length of a missing side and solve proportions.
Worksheet
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More Congruent Triangles

For Students 10th
In this congruent triangles worksheet, 10th graders solve 5 various types of geometry problems related to triangles. First, they draw and label triangles, indicating the additional pairs of corresponding parts that would have to be...
Worksheet
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Identifying Similar Triangles

For Students 10th
In this identifying similar triangles activity, 10th graders solve 6 different types of problem that include identifying and comparing similar triangles. First, they identify the three ways that determine whether two triangles are...
Lesson Plan
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What's a Swamp Good For?

For Teachers 4th - 5th
Young scholars identify the function and value of wetlands. In this instructional activity on appreciating wetlands, students explain how different household items can represent different aspects of the wetlands.
Lesson Plan
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Creative Writing/Poetry Lesson Plan

For Teachers 11th - Higher Ed
Young scholars complete poetry writing activities and art analysis activities. In this creative writing and art instructional activity, students analyze a cubist piece by Picasso and discuss abstraction. Young scholars read a poem by...
Lesson Plan
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Whatcha Gunna Do When the Hulkster's Measuring Too??

For Teachers 8th - 10th
Students measure using tools they have made. In this algebra lesson, students measure the height and distance using non-traditional measuring methods. They apply their findings to algebra and trigonometry properties of measurements.
Lesson Plan
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CSI Investigation of Congruence and Similarity

For Teachers 9th - 12th
Students differentiate between similarity and congruence using polygons. In this geometry lesson plan, students label triangles based on their properties. They find missing sides and angles using the interior sum theorem.
Lesson Plan
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Similar Triangles - Applied Problems

For Teachers 9th - 12th
Pupils differentiate between similar and congruent triangles. For this geometry lesson, students identify the angles of triangles using the similarity theorem. They apply concepts of triangles to the real world.
Lesson Plan
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Celebrate Beef

For Teachers 1st - 5th
Learners read about the history of cattle, discover new technologies, and fill out worksheets about cattle use. In this cattle lesson plan, students identify states that raise cattle and draw pictures of how cattle is used.

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