Lesson Plan
Curated OER

Duplicating Segments and Angles

For Teachers 10th
Tenth graders investigate geometric construction.  In this geometry lesson plan, 10th graders explore the procedure for copying an angle and a segment.  The lesson plan emphasizes the difference between a sketch, a drawing, and...
Worksheet
Curated OER

Making a Periscope

For Students 4th - 5th
In this designing a periscope worksheet, students follow the directions to collect materials and make a periscope. Students answer 5 questions.
Lesson Plan
Curated OER

There's Gotta Be An Angle

For Teachers 9th - 12th
Students examine the external variables that affect a downhill skier in the quest for speed. They access websites imbedded in this plan to become ski teams competing against one another. Each team presents results of all experiments.
Worksheet
Curated OER

Polygon Sum Conjecture

For Students 10th
In this geometry activity, 10th graders identify the missing angles using the polygons sum conjecture. They measure exterior and interior angles using their angle theorems. There are 63 problems.
Worksheet
Math Mammoth

Triangles

For Students 6th - 8th Standards
A six-page packet walks, or bends learners through angles that combine to create triangles. Definitions are given for right triangles, obtuse and acute triangles. They draw angles according to directions, using a protractor to meet the...
Lesson Plan
Curated OER

Super Gelatin

For Teachers 9th - 12th
Young scholars measure angles of refraction as the light travels through gelatin.  In this experimental instructional activity students complete a refraction lab and plot their data.
Lesson Plan
Curated OER

Sextant Measurements

For Teachers 6th - 8th
Students create a sextant. Using their sextant, students measure the height of tall objects. Students explore how sailors used sextants to identify their location on the ocean. They research how sextants are created.
Lesson Plan
Curated OER

Measurement

For Teachers 5th
Fifth graders measure specified distances when given perpendicular lines. For this measurement lesson plan, 5th graders draw the lines themselves.
Lesson Plan
Curated OER

Data-gathering Activities Relating to Trees in Their Environment

For Teachers 4th - 6th
Students gather data relating to trees in their environment. In this biology lesson plan, students determine heights of trees and their ages. A canopy map will indicate optimal growing areas for the tree.
Unit Plan
Mathematics Vision Project

Module 6: Congruence, Construction, and Proof

For Teachers 8th - 10th Standards
Trace the links between a variety of math concepts in this far-reaching unit. Ideas that seem very different on the outset (like the distance formula and rigid transformations) come together in very natural and logical ways. This...
Lesson Plan
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National Security Agency

Partying with Proportions and Percents

For Teachers 6th - 8th Standards
Examine ratios and proportions in several real-world scenarios. Children will calculate unit rates, work with proportions and percentages as they plan a party, purchase produce, and take a tally. This lesson plan recommends five...
Lesson Plan
Beacon Learning Center

The Fun Polygon

For Teachers 4th - 6th Standards
Junior geometers use hands-on manipulatives to explore and describe the properties and attributes of a fundamental polygon, the triangle. They learn different kinds of angles and their measurements. This well-written lesson plan provides...
Worksheet
Curated OER

Concurrent Lines, Medians and Altitudes

For Students 9th - 10th
In this geometry learning exercise, students construct angles and identify medians and altitudes. They use a compass and protractor to perform heir construction. There are 28 questions.
Worksheet
Curated OER

Construct, Bisect, Duplicate: Geometry Practice with Compass and Straight Edge

For Students 9th - 12th
Geometers employ a straight edge and compass to duplicate and bisect segments and angles, construct perpendiculars, parallel lines, figures, and circles with points of concurrency. Ample practice with 65 questions across 8 worksheets. No...
Lesson Plan
Curated OER

Surveying: 19 Chains and 50 Links

For Teachers 6th - 8th Standards
Through an interdisciplinary lesson plan, emerging engineers explore the history of surveying systems. After discussing various systems, they perform surveys on printable pages. Using their geometric skills, they physically stake out...
Lesson Plan
Curated OER

Spiders' Wheel

For Teachers 1st - 3rd
Pupils engage in a instructional activity which reinforces the concepts of clockwise and anti-clockwise rotation, while developing an understanding that angles are measured in degrees. They utilize a mathematics educational program to...
Lesson Plan
Curated OER

Orienting a Photovoltaic Cell

For Teachers 9th - 12th
By mounting a light bulb on a stand and a PV cell on another, physics apprentices experiment with the angle of incidence. Their goal is to determine the optimum angle for collecting solar energy. The use of a scientific calculator...
Lesson Plan
Curated OER

Volume of Solid Figures

For Teachers 7th - 11th
Learners calculate volume using the correct formula and the correct unit. They explore different prisms, spheres, cubes, and cones as they calculate volume and relate it to depths in oceans.
PPT
Curated OER

Vocabulary and Concept Development #2: struct and tract

For Teachers 7th - 12th
Focus on the Latin roots struct and tract with this PowerPoint, boasting plenty of practice opportunities. To help develop a definition of each root, viewers match a list of words to their pictures. Then, they compare those words to a...
Activity
Exploratorium

Peripheral Vision

For Teachers 4th - 6th
Life science learners discover the range of peripheral vision. They compare the angles at which they can detect motion, colors, and detailed shapes. 
Lesson Plan
Curated OER

Artistic Angles

For Teachers 5th
Fifth graders explore angles by using protractors. They recognize, describe and determine the surface area and volume of three-dimensional shapes. Students recognize the right angle, acute angle, obtuse angle and vertex. They identify...
Lesson Plan
Curated OER

What's Your Latitude?

For Teachers 7th - 12th
Students measure the height of items using an astrolabe.  In this latitude lesson students construct a sextant and determine height and latitude with it. 
Lesson Plan
Curated OER

Investigating the properties of a circle

For Teachers 7th - 10th
Students use wax paper to look at different properties of circles such as chords, tangent lines, inscribed angles, and inscribed angles in a semi-circle, as well as finding the center of the circle, and use GSP to investigate cyclic...
Lesson Plan
Curated OER

Are you in Golden Shape

For Teachers 7th - 10th
Students solve and verify the solution for unknown measures. In this geometry lesson plan, students identify the properties of circles. They use the arc, angle and segment relationship to find the missing measures.