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Lesson Plan
Curated OER

Geometry Practice: Classifying Solids #2

For Teachers 7th - 9th
In this solids worksheet, students identify the characteristics of solids. They name solids and determine the number of faces. This three-page worksheet contains seventeen problems. Answers are listed on the last page.
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Lesson Plan
Curated OER

Dihedral Figures

For Teachers 6th - 12th
Middle and high schoolers perform transformations. In this web based lesson, students explore dihedral figures. They use the web tools to translate, rotate, and reflect figures. Pupils identify lines of symmetry.
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Worksheet
Curated OER

Evaluating Expressions

For Students 8th - 9th
In this evaluating expressions worksheet, students solve and complete 50 various types of review problems. First, they complete each sentence and define the listed terms. Then, students evaluate each expression for the given values. They...
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Lesson Plan
Curated OER

Investigation-Looking at Polygons

For Teachers 8th
Eighth graders plot points and investigate polygons. They locate a point, using ordered pairs of integers on the coordinate plane. Students compare geometric measurements and computations on coordinate axes as they are applied to...
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Lesson Plan
Curated OER

Investigation - Adrienne's Pattern Block Angles

For Teachers 5th
Fifth graders investigate possible solutions to a word problem. They explore properties of polygons and right angles. Students demonstrate proper angle measurement. Students discover patterns.
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Lesson Plan
Curated OER

Interactivate - Geometry in Tessellations

For Teachers 8th - 11th
Young scholars use an on-line worksheet to experiment with patterns of tessellations in regular polygons. As students observe different shapes in the "Tessellate" Activity they complete a data table and practice making predictions for...
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Lesson Plan
Curated OER

Area and Perimeter Quiz

For Teachers 5th - 7th
In this mathematics worksheet, learners give the area and perimeter of each polygon illustrated on the sheet. There are six different polygons to measure on the sheet.
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Lesson Plan
Curated OER

Area Applet

For Teachers 3rd - 6th
Elementary math classes calculate the area of a shape and explain the correlation between the size of the perimeter and the areas that can be contained within that perimeter. They also explain the effect the shape of the perimeter has on...
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Lesson Plan
Curated OER

Symmetry and Geometric Shapes on Campus

For Teachers 6th - 8th
Build on your learners' previous knowledge of geometric shapes and symmetrical figures. Then set them out to take photos of geometric shapes on campus. They assess whether the photos contain symmetry or not. 
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Interactive
Curated OER

Similar Polygons

For Students 7th - 8th
In this similar polygons learning exercise, students identify the corresponding sides of polygons.  They use proportions to solve problems.  Students determine the scale factor of similar figures.  This two-page learning...
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Lesson Plan
Curated OER

Polygon People

For Teachers 6th - 8th
Students identify polygons.  In this polygon people lesson, students draw required shapes and construct a polygon person.  They identify each shape and its characteristics.  The lesson may be extended by allowing students...
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Worksheet
Curated OER

Geometric Word Problems

For Students 10th
In this geometric figures activity, 10th graders solve and complete 11 different word problems. First, they find the area of a regular octagon with a given side. Then, students find the area of each shaded region. They also find the area...
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Worksheet
Curated OER

Similar Polygons

For Students 10th
In this similar polygons worksheet, 10th graders solve and complete 20 various types of problems. First, they solve each proportion. Then, students write a ratio expressing the slope of a line through each pair of points. In addition,...
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Worksheet
Curated OER

Three- and Two- Dimensional Geometry

For Students 7th
For this three- and two- dimensional geometry worksheet, 7th graders solve 12 various problems related to geometric shapes and measurement. They first use paper and a pencil to sketch the front, side, back, top and bottom views of each...
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Worksheet
Curated OER

Chapter 8 Worksheet 1: Polygons & Angles

For Students 10th - 12th
For this polygon worksheet, students find the sum of the interior angles of a polygon. They determine the perimeter of equilateral figures, identify concave and convex figures and explore the characteristics of equilateral, equiangular...
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Lesson Plan
Curated OER

Polygon Monster

For Teachers 1st - 2nd
Students brainstorm different kinds of shapes. They then draw them on the paper and write the name of the shape on the back and then assemble the shapes to make a "monster". Students make up a survey about the monster including its name...
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Lesson Plan
Curated OER

Strut Your Stuff

For Teachers 4th - 5th
Learners begin the instructional activity by identifying what a polygon is and hypothesizing how many struts (diagonals) it would take to make a polygon rigid. They watch a "Magic School Bus" episode then experiment with various shapes...
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Lesson Plan
Curated OER

Discovering Perimeter

For Teachers 12th
Twelfth graders apply perimeter measurement to items found in newspapers and calculate the cost in terms of feet or yards. They share answers and explanations with classmates.
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Worksheet
Curated OER

Quadrilaterals and Other Polygons

For Students 6th - 7th
In this quadrilaterals and other polygons activity, students name various polygons and then decide if each polygon is a quadrilateral. Students also decide is certain polygons regular or irregular.
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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.
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Lesson Plan
Curated OER

Don't Box Me In

For Teachers 4th - 6th
Students explore the relationship between flat and three-dimensional shapes. They identify the names of 3-D shapes and construct cubes from squares.
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Interactive
National Council of Teachers of Mathematics

Nctm: Illuminations: Isometric Drawing Tool

For Students 9th - 10th
This site includes an interactive math tool to create drawings on isometric dot paper. You can draw figures using edges, faces, or cubes. Rotate and color your drawings, and view them in 3D or 2D.
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Unit Plan
Khan Academy

Khan Academy: Area of Triangles

For Students 5th - 7th Standards
Practice finding the area of right, acute, and obtuse triangles. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
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eBook
CK-12 Foundation

Ck 12: Interactive Geometry: 1.5 Quadrilaterals

For Students 9th - 10th Standards
Explore and measure a variety of quadrilaterals.