Lesson Plan
Curated OER

Around The Stop Sign

For Teachers 6th - 12th
Students analyze a drawing of a regular octagon inscribed in a circle to determine angle measures, using knowledge of properties of regular polygons and the sums of angles in various polygons to help solve the problem. They use...
Lesson Plan
EngageNY

Properties of Area

For Teachers 9th - 10th Standards
What properties does area possess? Solidify the area properties that pupils learned in previous years. Groups investigate the five properties using four problems, which then provide the basis for a class discussion.
Lesson Plan
Curated OER

Investigating Polygons

For Teachers 4th - 5th
In this math worksheet, students read information about 6 types of polygons and their sides and angles. Students then answer 5 questions about the geometric figures.
Lesson Plan
Curated OER

Transformations

For Teachers 6th
Sixth graders discover transformations. In this graphing instructional activity, 6th graders explore visual examples of plotting transformations as they review translations, rotations, and reflections. Students also practice solving...
Worksheet
Curated OER

The Farmer's Problem

For Students 7th - 10th
In this farmer's problem, students determine the maximum area that can be enclosed under given circumstances.  This one-page worksheet contains 1 problem.  The answer is provided.
Lesson Plan
Curated OER

Pent-up Pentominoes

For Teachers 1st
First graders are introduced to pentominoes in this lesson plan. Using the Internet, they match pentominoes with the same shape and use a grid sheet to make their own. They are read books by their teacher and they identify the...
Lesson Plan
Curated OER

Teaching the Bell Tetrahedral Kite

For Teachers 4th - 8th
Students complete readings on kite making and kite flying. They analyze how the parts of a system interconnect and influence each other. Students identifies and uses color and form in a 3D artwork.
Lesson Plan
Curated OER

Teaching the Tr'panier Trapezoid Kite

For Teachers 3rd - 6th
Students analyze how the parts of a system go together and how these parts depend on each other. They comprehend the forces in terms of strength and direction. Students observe, measure and describe weather indicators.
Lesson Plan
Curated OER

Nuts & Bolts: is Classification, Arbitrary, Or Not?

For Teachers 6th - 8th
Pupils, in groups, classify furniture, share their categories and rationales, then note how their different schemes vary, perfectly logical and useful, but completely arbitrary.
Assessment
Inside Mathematics

Hopewell Geometry

For Teachers 9th - 12th Standards
The Hopewell people of the central Ohio Valley used right triangles in the construction of earthworks. Pupils use the Pythagorean Theorem to determine missing dimensions of right triangles used by the Hopewell people. The assessment task...
Lesson Plan
Curated OER

Fun With Symmetry

For Teachers 2nd - 3rd
Students manipulate shapes to find multiple lines of symmetry. They use color to visualize the lines of symmetry.
Unit Plan
Texas Education Agency

Texas Gateway: Comparing and Explaining Transformations

For Students 7th - 8th Standards
Given rotations, reflections, translations, and dilations, students will be able to develop algebraic representations for rotations and generalize and then compare and contrast the properties of congruence transformations and...
Unit Plan
Texas Education Agency

Texas Gateway: Comparing and Explaining Transformations

For Students 7th - 8th Standards
Given rotations, reflections, translations, and dilations, students will be able to develop algebraic representations for rotations, and generalize and then compare and contrast the properties of congruence transformations and...
Lesson Plan
University of Texas at Austin

Mathematics Teks Toolkit: Oh No! My Ominoes!

For Teachers Pre-K - 1st Standards
Explore pentominoes by determining congruent and non-congruent shapes.
eBook
Mathigon

Mathigon: Geometry: Euclidean Geometry: Definitions

For Students 9th - 10th Standards
This lesson focuses on Euclidean Geometry terminology; such as line, point, line segment, congruence, circle, radius, ray, and more. It defines each term and provides an example of each.
Handout
Math Open Reference

Math Open Reference: Vertical Angles

For Students 9th - 10th
A complete reference guide to vertical angles. It provides definitions, examples, and an interactive activity that enhances further explanation. Includes links to related topics.