Lesson Plan
Curated OER

Fashion Day

For Teachers 8th
Eighth graders practice using basic measurements to solve word problems.They also investigate finding the perimeter of different polygons and define the characteristics to classify the shape as a polygon.
Worksheet
Curated OER

The Baby Gate Problem

For Students 9th - 12th
In this secondary mathematics activity, high schoolers expand a six-panel play yard by two-panels  Students determine the width of each panel and the area of the expansion. The one page activity contains one problem with the...
Lesson Plan
Curated OER

Geometry w/o Figures - Week 7 (Basic Geometry Formulas)

For Teachers 10th - 12th
In this basic geometry worksheet, young scholars use basic formulas of geometry to find the area of a polygons, the number of sides of a polygon, and sum of the angles of various polygons. This three-page worksheet contains eight problems.
Handout
Granite School District

7th Grade CCSS Math Vocabulary Word List

For Teachers 7th
Address key vocabulary in the seventh grade Common Core Math Standards with this comprehensive list. A series of word cards is also provided that supports each term with images and examples, making this an excellent tool for teaching the...
Lesson Plan
Texas Instruments

Construction Regular Polygons

For Teachers 9th - 12th Standards
Learners investigate the process necessary to construct regular polygons. They explore the degree measures of the angles in a regular polygon. Using this information and technology in the form of Cabri Jr., your pupils will construct...
Lesson Plan
Curated OER

Polyhedra

For Teachers 9th - 11th
Students analyze convex polyhedra through hands on methods. In this geometrical shapes instructional activity, students construct paper models of convex polyhedra and identify the different properties including the number of sides, faces...
Lesson Plan
Curated OER

Probability and Geometry

For Teachers 8th - 11th
Students explore the ways Geometry can help solve probability problems. Students describe platonic solids and practice calculating probability using an online resource. They construct dice with various numbers of sides to demonstrate...
Worksheet
Curated OER

Vocabulary Matching

For Students 9th - 10th
In this geometry worksheet, students math the shape to it's name. The shapes are drawn out with a small example to trigger the memory of the students. There are 33 questions with an answer key.
Lesson Plan
Curated OER

Introduction to Curve Stitching - Line Designs

For Teachers 3rd - 5th
Students develop their awareness that straight line segments can produce the illusion of a curve and helps them recognize and describe number patterns and geometric fundamentals.
Worksheet
Curated OER

Similar Figures

For Students 7th - 9th
In this similar figures worksheet, students identify corresponding sides and corresponding angles of given polygons.  They identify similar figures.  This three-page worksheet contains 18 problems.
Interactive
Curated OER

My Test Book: Geometry Skills 2

For Students 5th - 7th
In this online interactive math skills worksheet, students solve 10 multiple choice math problems regarding geometry skills. Students may submit their answers to be scored.
Worksheet
Curated OER

Worksheet 22-Fall 1995

For Students 11th - Higher Ed
In this math learning exercise, students examine the graph of the derivative. Then they determine the critical points that correspond to the relative extrema.
Lesson Plan
Curated OER

Play Dough Day

For Teachers 12th
Twelfth graders build a model of the following figures with the base from column I and the cross-section from column II. Draw the base with labeled axes on the graph paper and construct the figure on top of the base with the play dough...
Worksheet
Curated OER

Related Rate Problems

For Students 11th - 12th
In this calculus worksheet, students solve problems that involve related rates.  The two page worksheet contains twenty-four problems.  Answers are not provided. 
Lesson Plan
Curated OER

Introducing Powers and Models

For Teachers 4th - 6th
Students construct two dimensional models to illustrate squared numbers. In this geometry instructional activity, students use graph paper and an x/y axis to build squares exponentially. Students identify powers and relationships between...
Lesson Plan
Curated OER

Building Shapes From Numbers

For Teachers 5th - 8th
Students experience how to illustrate some of the many connections between number and geometry. Through this 2-3 day focus on square numbers and triangular numbers, students make connections among mathematical topics.
Organizer
Curated OER

Properties of Shapes

For Students 9th - 12th
In this math worksheet, students look for the properties related to each shape and then fill in the graphic organizer with the categories needed.
Lesson Plan
Curated OER

Bill's Badge

For Teachers 6th - 8th
Students explore the making of circles and concepts related to them in geometry. The project is inquiry based will focus upon students making their own nametags. The construction is ideal for hands on students.
Handout
Math Open Reference

Math Open Reference: Equilateral Triangle

For Students 9th - 10th Standards
Learn about equilateral triangles with this helpful reference tool. Provides a detailed definition, examples, and an interactive activity that enhances further explanation. Includes links to related topics.
Lesson Plan
Illustrative Mathematics

Illustrative Mathematics: G Srt Finding the Area of an Equilateral Triangle

For Teachers 9th - 10th Standards
This task examines how to calculate the area of an equilateral triangle two ways: using triangle congruence and using trigonometric ratios. Aligns with G-CO.C.10 and G-SRT.C.
Handout
Math Open Reference

Math Open Reference: Area of an Equilateral Triangle

For Students 9th - 10th Standards
Learn about the area of an equilateral triangle with this helpful reference tool. Provides a detailed definition, examples, and an internet activity that enhances further explanation. Includes links to related topics.
Interactive
Calculator Soup

Calculator Soup: Equilateral Triangles Calculator

For Students 9th - 10th Standards
An equilateral triangle is a special case of a triangle where all 3 sides have equal length and all 3 angles are equal to 60 degrees.
Unit Plan
Math Open Reference

Math Open Reference: Triangles

For Students 9th - 10th Standards
A complete reference guide to types of triangles and triangle perimeter and area. It provides definitions and interactive animated activities that enhance further explanation.
Lesson Plan
Illustrative Mathematics

Illustrative Mathematics: G C Mutually Tangent Circles

For Teachers 9th - 10th Standards
Three circles are mutually tangent. Students are asked to find the total area of the circles plus the area inside where they meet. Students will need to know how to calculate the area of a circle, a sector of a circle, and an equilateral...