Lesson Plan
Curated OER

Transformations

For Teachers 5th - 6th
Learners draw on graph paper. In this geometry instructional activity, students review types of triangles and quadrilaterals. Learners investigate geometric transformations, including translation, rotation and reflection. Students...
Lesson Plan
Curated OER

Graphing Data Brings Understanding

For Teachers 9th - 11th
Students collect, graph and analyze data. In this statistics lesson, students use circle, pie, bar and lines to represent data. They analyze the data and make predictions bases on the scatter plots created.
Lesson Plan
Curated OER

Trig is SOH Easy!

For Teachers 7th - 10th
Students derive the six trigonometric identities. In this trigonometry lesson, students review the parts of a right triangle and use the Pythagorean theorem as a guide to find the trig identities. They find sine, cosine and tangent ratios.
Worksheet
Curated OER

Measure and Draw Angles

For Students 5th - 7th
Six word problems provide practice for young geometers to review angles, the angle a of straight line, circles, right angles, and others. I like the approach of these questions; they require thinking and explaining, not just computation.
Worksheet
Curated OER

Classify and Measure Angles

For Students 3rd - 5th
In this angles worksheet, students use a protractor to measure and classify a set of 9 angles. A reference web site is given for additional activities.
Worksheet
Curated OER

Classify and Measure Angles

For Students 4th - 6th
In this angles activity, students classify and measure a set of 9 angles, using a protractor. A reference web site is given for additional activities.
Lesson Plan
Curated OER

Roping Quadrilaterals

For Teachers 4th - 5th
Students explore with quadrilaterals.  In this roping quadrilaterals lesson, students work in cooperative groups to play the game, "Question, please!" in order to identify, describe, compare and classify quadrilaterals....
Worksheet
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K12 Reader

What’s Your Angle?

For Students 4th - 5th Standards
Start out with angles by asking your pupils to read this reading passage. Class members will learn about degrees, right angles, acute angles, and obtuse angles and then respond to five questions about the text.
Lesson Plan
Polar Trec

Playground Profiling—Topographic Profile Mapping

For Teachers 9th - 12th Standards
The Kuril islands stretch from Japan to Russia, and the ongoing dispute about their jurisdiction prevents many scientific research studies. Scholars learn to create a topographic profile of a specific area around their schools. Then they...
Lesson Plan
Curated OER

Angles in Art Lesson

For Teachers 5th - 9th
Learners examine the correlation between art and math. Using their computers, students construct and measure angles. Learners identify the properties of angles and polygons. They engage in the Angles program on their Palm and use the...
Lesson Plan
Curated OER

Angle Action 1,2 and 3

For Teachers 8th - 10th
Students investigate angles through construction. In this geometry lesson, students use a protractor to identify the measurement of an angle. They identify angles cut by a transversal and two parallel lines.
Worksheet
Curated OER

Measuring angles and segments

For Students 7th - 8th
In this middle school geometry worksheet, students use a ruler and a protractor to measure segment length and angle size.  The one page worksheet contains six problems.  Answers are not provided. 
Worksheet
Curated OER

Estimate then Measure the Angle #4

For Students 4th - 6th
In this angles worksheet, students estimate angles to within 15 degrees, then measure and name each. A reference web site is given for additional activities.
Lesson Plan
Curated OER

Basic Geometry ... A Pathway to Angles

For Teachers 9th
Help 9th graders identify lines, points, rays, and planes in geometry. They  practice identifying, measuring, and drawing angles of different degrees. This is a fundamental lesson to help students learn the building blocks of geometry.
Assessment
Mathed Up!

2D and 3D Shapes

For Students 6th - 9th Standards
What a great assessment to give young mathematicians in order to test their knowledge on two- and three-dimensional shapes. Learners name various shapes, identify the number of edges, faces, and vertices, match an unfolded version of a...
Activity
Exploratorium

Corner Reflector

For Teachers 5th - 7th
If you set up a triad of mirrors into a corner figuration, they act as a kaleidoscope, bouncing light waves back and forth indefinitely, changing the light that your eyes perceive. Although the materials required are very specific and...
Lesson Plan
Curated OER

Math: Arcs and Chords

For Teachers 9th - 10th
Students draw diagrams demonstrating how it is possible to two central angles to be congruent and their minor arcs are not congruent. In groups, they illustrate theorems with their constructed circles, create diameters of circles that...
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 via Triangulation

For Teachers 6th - 12th
Students utilize triangulation techniques to determine altitudes of objects. An altitude locator is constructed and used to determine the height of a building or a tree. Tangent tables and formulas provide the ratio for the formula to...
Worksheet
Curated OER

Concurrent Lines, Medians and Altitudes

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

What's Your Angle?

For Teachers 6th - 8th
Students devise procedures for using a protractor to measure the number of degrees in an angle. They use inductive reasoning skills to construct their own method for effectively using the protractor to measure angles, as well as, make...
Lesson Plan
Curated OER

Working With Angles

For Teachers 4th - 5th
In this math worksheet, students collaborate with a "study buddy" or "coach" to learn whether an angle is acute, obtuse or right. Students follow the directions to go through the process of deciding what classification an angle has....
Lesson Plan
Curated OER

Journey of the Nez Perce

For Teachers 10th - 12th
Students study the retreat of the Nez Perce Native Americans into Montana while tracing their journey on a map. They use the law of cosines to solve problems based on the navigational methods of the Nez Perce. They work with both the law...
Worksheet
Curated OER

Angles

For Students 6th - 8th
In this math learning exercise, students measure a series of angles. Then they measure the angles in the triangles and determine the sum of the angles.