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

Vocabulary Challenge

For Students 4th - 6th
In this math vocabulary worksheet, students choose which multiple choice answer best defines twenty-five mathematical terms. Students place their answers on the lines provided.
Lesson Plan
Pennsylvania Department of Education

Length and Perimeter

For Teachers 3rd
Third graders explore tessellations and the spatial concepts used in creating them.  In this tessellations lesson, 3rd graders rotate, reflect and transform shapes to create tessellations.  Students become familiar with the...
Lesson Plan
Curated OER

Pent-up Pentominoes

For Teachers 1st
Students explore pentominoes in this activity. They build shapes as directed and color the tiles on their grid sheet.
Worksheet
Curated OER

Investigate Perimeter

For Students 5th - 6th
In this perimeter worksheet, learners are given perimeter and draw 3 different squares or rectangles on given grids, using those given measurements, then complete 2 related questions.
Lesson Plan
Curated OER

Geometry Journal: Classifying Solids

For Teachers 10th
In this geometry worksheet, 10th graders respond to journal prompts related to prisms and classifying solid shapes.  The two page worksheet contains nine questions.  Answers are included. 
Lesson Plan
Curated OER

Exploring Projective Geometry

For Teachers 7th - 8th
In this exploring projective geometry worksheet, students use computer software for instruction, then answer 9 questions about 3D drawings.
Lesson Plan
Curated OER

Measurements

For Teachers 7th
Seventh graders solve word problems involving real world situation. In this geometry instructional activity, 7th graders solve problems related to volume. They apply the formulas taught in geometry.
Interactive
Curated OER

Volume: How Full Can You Go?

For Students 4th - 6th
In this volume:  how full can you go instructional activity, students interactively answer 10 multiple choice questions about volume in both metric and standard measure, then click to check their answers.
Lesson Plan
Curated OER

Geo Jammin' By DeSign - Day 2, Lesson 7: Start At Square One

For Teachers 2nd - 3rd
Students examine new shape possibilities by combining two and four triangles using manipulatives.
Lesson Planet Article
Curated OER

Tessellation Lesson Plans

For Teachers 2nd - 6th
Students in second through eighth grades can fill their imaginations with repeating shapes!
Lesson Plan
Curated OER

Nature's Polyhedrons

For Teachers 9th - 12th
Students are introduced to polyhedrons through using straw models to explore geometric solids and constructing Christmas tree ornaments using Epsom salt crystals. Students will view interactive videos and investigate and retrieve...
Worksheet
Curated OER

Two-Step Linear Equations

For Students 7th
In this two-step linear equations worksheet, 7th graders solve 15 various problems that include linear equations with more than one-step. First, they need to get the variable, x, alone by subtracting/adding the whole number on the same...
Lesson Plan
OER Commons

Oer Commons: Area of a Circle

For Teachers 7th Standards
Seventh graders will compare the formula for the area of a regular polygon to discover the formula for the area of a circle.
Study Guide
Oswego City School District

Regents Exam Prep Center: Area of Polygons and Circles

For Teachers 3rd - 6th Standards
How would you find the area of a polygon or circle? Explore this concept with engaging activities at this test prep site. Here you will find detailed problem solving strategies with accompanying visuals, a reference table with formulas,...
Activity
Texas Instruments

Texas Instruments: Areas of Regular Polygons and Circles

For Teachers 9th - 10th Standards
Use Cabri Jr. to find the area of several regular polygons and then use that investigation to derive the area of a circle from a many-sided polygon.
Activity
Texas Instruments

Texas Instruments: Finding the Area of Regular Polygons

For Teachers 9th - 10th Standards
Students discover a very intuitive method for determining the area of a regular polygon. They use that information to develop the standard area formula.
Activity
Texas Instruments

Texas Instruments: Finding the Area of a Perfect Polygon.

For Teachers 9th - 10th
Students will review how to find the area of a regular polygon.
Activity
Texas Instruments

Texas Instruments: Area of a Regular Polygon

For Teachers 9th - 10th
This activity has the students derive the formula for finding the area of a regular polygon. Demonstrating the procedure of constructing a regular polygon in front of the class maybe necessary depending on the students prior experience
Handout
Math Open Reference

Math Open Reference: Area of a Regular Polygon

For Students 9th - 10th
A complete reference guide to the area of a regular polygon. It provides definitions, examples, and an interactive activity that enhances further explanation. Includes links to related topics.
Handout
Math Open Reference

Math Open Reference: Area of a Trapezoid

For Students 9th - 10th Standards
Learn about the area of a trapezoid with this helpful reference tool. Provides a detailed definition, examples, and interactive activities that enhance further explanation. Includes links to related topics.
Handout
Math Open Reference

Math Open Reference: Area of a Rhombus

For Students 9th - 10th
Learn about the area of a rhombus with this handy reference guide. Provides a detailed definition, formulas, and an interactive activity that enhances further explanation. Includes links to related topics.
Handout
Math Open Reference

Math Open Reference: Polygons

For Students 9th - 10th
Get the definition and properties of a polygon. Then explore such topics as: 1) types of polygon 2) area 3) Perimeter 4) angles associated with polygons and 5) names of polygons.
Lesson Plan
Better Lesson

Better Lesson: Area of Triangles

For Teachers 6th Standards
Sixth graders apply what they know about area of other polygons to develop a formula for finding the area of a triangle.

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