Worksheet
Curated OER

Geometry

For Students 3rd - 5th
In this geometry review game worksheet, students use the provided game cards and calling cards to play a Bingo-like game. Students learn geometric terms while playing a group game.
Worksheet
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Vocabulary Challenge

For Students 4th - 6th
In this math vocabulary instructional activity, students choose which multiple choice answer best defines twenty-five mathematical terms. Students place their answers on the lines provided.
PPT
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Chalkboard Challenge: Fifth Grade Math Review

For Teachers 4th - 5th
This PowerPoint addresses fifth grade math concepts, focusing mostly on geometry. The interactive math review game is in a "Jeopardy" style format and enables students to revisit the topics in geometry such as polygons, quadrilaterals...
Worksheet
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Why do Stars Rise in the East?

For Students 8th - 10th
In this stars rise in the east instructional activity, students use geometry to show how the Earth rotates from west to east and why celestial bodies appear to rise in the east and set in the west. Students draw a figure and label given...
Lesson Plan
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Geometry Library

For Teachers 5th
Fifth graders write and illustrate books to make a class library of math term books. They utilize vocabulary associated with geometry to make their books. For example, one character may be, Mr. A Cute.
Lesson Plan
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Quilt Squared

For Teachers 4th - 6th
Students study West Virginia quilts. In this mathematics lesson plan, students use symmetry, geometric shapes, and patterns to create their own quilt square.
Lesson Plan
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Where in the World

For Teachers 4th - 5th
Students explore the global grid system. In this globe lesson, students identify latitude and longitude lines and how these can tell the coordinates of any place. They use the Internet to find the exact coordinates for their town. 
Worksheet
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Academic Algebra 2 Test

For Students 11th
For this algebra worksheet, 11th graders rewrite word problems using algebraic expressions. They solve problems using systems of equations. There are 14 problems on this worksheet.
Lesson Plan
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Quandaries, Quagmires, and Quadrilaterals

For Teachers 3rd - 5th
Students classify, flip, slide, and turn a quantity of quadrilaterals.
Lesson Plan
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The Building Blocks of Geometry

For Teachers 5th
Fifth graders explore geometric building blocks in the real world in order to describe the characteristics and relationships of points, lines, line segments, rays, and planes. This is the first lesson plan in a series of lessons in...
Lesson Plan
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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
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Three Tangent Circles

For Students 9th - 12th
In this tangent circles activity, students use pi to solve a problem involving tangent circles.  This one-page activity contains 1 problem.  The answer is provided at the bottom of the page.
Lesson Plan
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Whatcha Gunna Do When the Hulkster's Measuring Too??

For Teachers 8th - 10th
Students measure using tools they have made. In this algebra lesson, students measure the height and distance using non-traditional measuring methods. They apply their findings to algebra and trigonometry properties of measurements.
Lesson Plan
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Geo-Mat

For Teachers 1st - 3rd
Students review plane figures by playing a game that resembles "Twister." They listen to directions to locate a large example of the figure which is placed on the floor.
Worksheet
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Plane Shapes

For Students 1st - 2nd
In this early childhood plane shapes instructional activity, students sharpen their problem solving skills as they solve 6 story problems.
Worksheet
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Downtown Landmarks: geometry on Firstside

For Students 5th - 10th
In this geometry worksheet, students look at a picture of downtown landmarks and identify different shapes, lines, and more. Students identify 18 items.
Worksheet
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Academic Algebra II Test Chapter 4, Part 2

For Students 9th - 12th
In this test of knowledge worksheet, students answer 2 story problems, they solve 6 systems of equations. Students multiply 2 maxrix sets. They determine the inverse of two matrices. Students determine the linear regression line for two...
Lesson Plan
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The Plane! The Plane!

For Teachers 5th
Fifth graders work with polygons.
Lesson Plan
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Pass It On

For Teachers 5th
Fifth graders participate in a class activity that helps them learn some geometric terms along with their definitions. They describe relationships between two and three-dimensional shapes and analyze attributes and properties of...
Lesson Plan
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Proposed Problems

For Teachers 6th - 8th
In this math worksheet, students find the solutions to the problems that involve solving equations with and without rational expressions.
Unit Plan
Cuemath

Cuemath: Acute Triangle

For Students 9th - 10th Standards
Explore the world of acute triangles in this mini-lesson. Explores its properties, how to create it, and other interesting facts related to acute triangles.
Unit Plan
Wolfram Research

Wolfram Math World: Acute Triangle

For Students 9th - 10th Standards
This MathWorld site gives a short discussion on acute triangles with links to related terms and topics. The site offers a discussion on the least number of acute triangles to compose various polygons, and a discussion on the relationship...
Handout
Government of Alberta

Learn alberta.ca: Mathematics Glossary: Acute Triangle

For Students 3rd - 8th Standards
Get a visual and animated definition of what an acute triangle is, as well as examples of acute angles in the real world. [Requires Java.]
Handout
Math Open Reference

Math Open Reference: Acute Triangle

For Students 9th - 10th Standards
Explore acute triangles with this handy reference guide. Provides a detailed definition and an interactive activity that enhances further explanation. Includes links to related topics.

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