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Lesson Plan
Curated OER

Similarity and Congruence

For Teachers 9th - 12th
Students determine that two figures are similar or congruent by investigating figures that are similar and figures that are congruent. They prove that two figures are similar or congruent by using definitions, postulates, and theorems.
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Lesson Plan
University of Texas

Free-Body Diagram

For Teachers 11th - 12th Standards
Preparing for an AP test is about more than bubble sheets and memorization. The two activities in this resource require a direct application of skills learned throughout an AP Physics course.
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Lesson Plan
Curated OER

The Luxor Hotel Contract

For Teachers 9th - 12th
High schoolers determine the surface area of the Luxor Hotel, using the square feet of the base, volume, and the volume formula. They create a scale model of the triangular/pyramid shaped hotel.
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Lesson Plan
Curated OER

Congruent Triangles Postulates

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

Studying Special Segments in Triangles

For Teachers 8th - 10th
Pupils 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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Worksheet
Curated OER

New York State Testing Program: Mathematics Book 2, Grade 5 2008

For Students 5th
In this 5th grade math standardized test practice activity, students solve 18 multiple-step open-ended math problems based on New York academic standards.
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Lesson Plan
Curated OER

CSI Investigation

For Teachers 8th - 10th
Students solve real life situation using the Pythagorean Theorem. In this geometry lesson plan, students calculate the length, midpoint and slope of segments. They solve word problems using properties of square roots.
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Lesson Plan
Curated OER

Mapping a Site Using a Coordinate Plane

For Teachers 5th - 8th
Learners map their playground as if it were an archeological site. They locate objects on the playground and determine their location using coordinate points. A related instructional activity is Coordinate Grid: Mapping an Archeological...
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Worksheet
Curated OER

Constructing Triangles

For Students 5th - 6th
In this constructing triangles online worksheet, learners 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 score for...
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Lesson Plan
Curated OER

Hidden Jewels of Geometry

For Teachers 5th - 8th
Students identify different geometric shapes, and arrange them artistically in original jewelry designs.
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Lesson Plan
Curated OER

High School Mathematics Problems from Alaska: Azimuth and Arc Length

For Teachers 9th - 12th
Young scholars track the Azimuth sunrise and sunset over time by creating a chart.
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Lesson Plan
Curated OER

Design Your Space

For Teachers 5th - 8th
Students evaluate the acceptable use of classroom space. The class participated in a brief lecture and discuss of floor plans and how they are used in architecture. Using graph paper, they create a scale drawing of the classroom...
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Lesson Plan
Curated OER

Triangles

For Teachers 5th - 6th
Students draw triangles. In this shapes instructional activity, students discuss what they already know about triangles, what they are and what they are made up of. Students discuss the types of triangles and practice drawing each type.
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Lesson Plan
Curated OER

Light

For Teachers 4th - 6th
Students examine how light waves travel. In this properties of light lesson, students observe how light travels in water, how light is reflected and refracted, and how light is pure energy.
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Lesson Plan
Alabama Learning Exchange

Trapezoids: What's Equal or Right About Them?

For Teachers 8th - 10th Standards
Pupils explore the concept of trapezoids.  In this trapezoids instructional activity, learners identify legs and bases of a trapezoid.  Pupils discuss the similarities and differences between isosceles trapezoids and right trapezoids. ...
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Lesson Plan
Curated OER

For Better or Worse: Cultural Exchange

For Teachers 4th - 6th
Learners participate in a cultural exchange program with a Native American school in Winnebago, Nebraska. They conduct research on a variety of Native American tribes, prepare a presentation that represents the culture of their school...
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Lesson Plan
Curated OER

Our Class Record Book

For Teachers 2nd
Second graders, in groups, prepare a list of proposed record ideas for the class book.
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Lesson Plan
Curated OER

Pendulum Lab

For Teachers 11th - 12th
Students predict how changing the pendulum components affect its period. For this physics lesson, students calculate the period using different masses. They analyze lab result and complete assigned worksheet.
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Handout
Math Open Reference

Math Open Reference: Angles

For Students 9th - 10th Standards
Everything you wanted to know about angles and more, including 1) how to measure angles 2) types of angles 3) angle relationships and 4) angles around a transversal.
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Unit Plan
Sophia Learning

Sophia: Measuring Angles With a Protractor

For Students 9th - 10th Standards
Students learn how to measure angles with a protractor. Detailed examples are included in the video lesson.
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Unit Plan
CK-12 Foundation

Ck 12: Geometry: Angle Measurement Grade 6

For Students 6th
[Free Registration/Login may be required to access all resource tools.] Learn how to use a protractor to draw angles.
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Handout
Science Struck

Science Struck: Devices Used to Measure Angles

For Students 9th - 10th Standards
Looks at the many devices used to measure angles in academic settings and in real-world settings.
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Handout
Science Struck

Science Struck: How to Use a Protractor to Measure and Draw Angles

For Students 4th - 8th Standards
Step-by-step instructions accompanied by illustrations that demonstrate how to use a protractor to draw angles and to measure angles.
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Unit Plan
CK-12 Foundation

Ck 12: Geometry: Angle Measurement Grades 8 10

For Students 9th - 10th
[Free Registration/Login may be required to access all resource tools.] Find angle measures using a protractor and the Angle Addition Postulate.