Worksheet
Curated OER

Proofs Involving Congruent Angles

For Students 11th - 12th
In this congruent triangle worksheet, students write proofs to support characteristics of congruent triangles. This one-page worksheet contains ten problems.
Worksheet
Curated OER

Triangle Proofs

For Students 9th - 12th
In this triangle proofs worksheet, students answer 5 questions about triangles and polygons given certain information. Students then construct 4 triangle or polygon proofs.
Worksheet
Curated OER

Circles

For Students 10th
In this circles worksheet, 10th graders solve and complete 8 different problems. First, they find the two segments perpendicular to a given circle. Then, students find the line tangent to the circle illustrated and the sides marked. They...
Worksheet
Curated OER

Circles

For Students 10th
In this circles worksheet, 10th graders solve and complete 8 different types of problems. First, they find the measures of each segment given the center of a circle. Then, students find the length of a side of a triangle shown within a...
Worksheet
Curated OER

Systems of Equations

For Students 10th
In this systems of equations worksheet, 10th graders solve and complete 4 different sets of problems. First, they state the domain for each equation. Then, students solve each system of equations using Cramer's Rule. They also find the...
Worksheet
Curated OER

Triangles

For Students 10th
In this triangles instructional activity, 10th graders solve and complete 6 different problems. First, they draw a median from a given point and an altitude. Then, students complete each statement using the picture. They also find the...
Lesson Plan
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What Can I Do For You?

For Teachers K - 2nd
Students explore philanthropic acts within the school. In this philanthropy lesson, students list acts of philanthropy they can do at school and sing songs about philanthropic acts.
Lesson Plan
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Singing as a Way of Giving

For Teachers K - 2nd
Learners perform songs from previous philanthropy lessons. In this music instructional activity, students create a video of songs and give it to a local shelter. Learners are encouraged to be creative and sing songs such as "What Can I...
Worksheet
Curated OER

Right Triangle

For Students 8th - 9th
In this right triangle worksheet, students find the length of sides of a right triangle. This one-page worksheet contains 1 problem.
Worksheet
Curated OER

Right Triangle

For Students 8th - 9th
In this right triangle worksheet, students find the lengths of the sides of a triangle. This one-page worksheet contains 1 problem.
Worksheet
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Geometry Problem

For Students 10th
In this geometry worksheet, 10th graders analyze an equilateral triangle which is divided into right triangles and determine missing lengths.  The one page worksheet contains one problem.  Answer is provided.
Worksheet
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Math Worksheet: Geometry Problem (3)

For Students 9th - 11th
In this geometry worksheet, students find the missing side of a triangle within a triangle. Students use sine and cosine relationships as well as the Pythagorean Theorem.
Lesson Plan
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Making Our World Better

For Teachers 1st - 3rd
Students research on the Internet. In this community lesson, students use various websites to find characteristics of the United States, to learn the importance of having diverse communities and to discuss what they know about the...
Unit Plan
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The Care and Feeding of a Gingerbread Man

For Teachers K - 2nd
Students read about the gingerbread man and have community members come to their class saying where they have seen him. In this community lesson plan, students listen to different community members about how the gingerbread man has been...
Interactive
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SAT Practice Test

For Students 9th - 12th
In this secondary mathematics worksheet, high schoolers assess their readiness for the SAT test.  The one page, interactive worksheet contains ten problems.  Solutions are not provided. 
Worksheet
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SAT Grid Practice Test 11

For Students 9th - 11th
In this SAT practice test, students compute the area and perimeter of polygons.  They determine the volume of a cylinder and solve problems with exponents.  This one-page worksheet contains 10 problems.  Answers are provided.
Lesson Plan
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Constructing Triangles

For Teachers 9th - 10th
Pupils construct triangles. In this geometry lesson plan, students create equilateral triangles. They also construct triangles where the sides are different. They use the lab to create and move shapes around with the Cabri program.
Lesson Plan
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Incenter of a Triangle

For Teachers 10th
Tenth graders find the incenter of a triangle. In this geometry lesson, 10th graders define the way to create an incenter with an angle bisector. They differentiate between incenter and incircle.
Lesson Plan
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Orthocenter Of a Triangle

For Teachers 8th - 10th
Students find the orthocenter of a triangle. In this geometry lesson, students identify where the altitudes meet in a triangle. They use Cabri software to explore acute, obtuse and right triangles.
Lesson Plan
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SAS Similarity Theorem

For Teachers 9th - 10th
Students identify and use the similarity theorem. In this geometry lesson, students differentiate between congruent and similar triangles. They solve problems using the computer modifying shapes by dragging.
Lesson Plan
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Heron's Formula

For Teachers 9th - 10th
Students use Heron's formula to calculate the area of a triangle. In this geometry instructional activity, students use three different methods to solve the area of a triangle. They find and construct the incentor and angle bisector...
Worksheet
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Halle Berry

For Students 4th - 8th
In this famous person worksheet, students read a passage about Halle Berry and then complete a variety of in-class and homework activities to support comprehension, including partner interviews, spelling, cloze, synonym...
Lesson Plan
Pennsylvania Department of Education

Counting Numbers: Four

For Teachers Pre-K - 1st
Young scholars practice counting to four. In this counting to four lesson, students access an e-book at "I Save A Tree.com" where they count items up to four. They examine the text and images which can be seen in both Spanish and English.
Lesson Plan
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Analysing Scientific Explanations for Megafauna Extinction

For Teachers 5th - 6th
Students compare explanations for Australian's megafauna extinctions and identify reasons for popular acceptance of certain scientific explanations. They debate and analyze scientific explanations.

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