Worksheet
Curated OER

Area and Periemeter

For Students 10th
In this geometry worksheet, 10th graders determine the area and perimeters of various quadrilaterals and triangles.  The one page worksheet contains ten problems.  Answers are not provided. 
Lesson Plan
Curated OER

Plane and Solid Figures

For Teachers 9th - 11th
Young scholars define a plane and a solid shape. In this geometry lesson, students compare and contrast different geometric shapes as they relate to solids. They name the geometric solids based on their sides and edges.
Lesson Plan
Curated OER

Problem Solving Using Power Polygons

For Teachers 3rd - 10th
Young scholars investigate geometric shapes by creating figures on a plane. In this polygon lesson, students complete a worksheet based on the angles in a power polygon. Young scholars identify the different types of polygons and define...
Lesson Plan
Curated OER

Constructing Triangles

For Teachers 9th - 10th
Students construct triangles. In this geometry lesson, students create equilateral triangles. They also construct triangles where the sides are different. They use the lab to create and move shapes around with the Cabri program.
Lesson Plan
Curated OER

They're Everywhere! They're Everywhere!

For Teachers 7th - 12th
Students gain an appreciation of the polygons and polyhedrons around them that make their world one of order and strength. They build polygons and polyhedrons, and then construct airplanes out of polygons.
Worksheet
Curated OER

Three Dimensional Figures

For Students 3rd - 5th
In this geometry worksheet, students study diagrams with labels of common geometric figures. Students then answer 24 questions. Then they draw and label their own figures.
Lesson Plan
Curated OER

Exploring Tessellations

For Teachers 5th
Fifth graders examine how to make tessellations. In this tessellation instructional activity, 5th graders review the meaning of the word "polygon" while the teacher shows them various examples. They practice making tiling patterns or...
Worksheet
Math Mammoth

Volume Problems

For Students 7th - 9th
In this volume problem instructional activity, students determine the volume of various objects. They compare similar objects and determine the percent of increase and decrease of the surface area and volume. This one-page instructional...
Lesson Plan
Mathematics TEKS Toolkit

Grade 6: Exploring c/d = pi

For Teachers 6th Standards
Introduce your math class to the perimeter of a circle. Teach them that pi describes the relationship between the circumference and the diameter. As a hands-on investigation, pairs or small groups use string to compare these two values...
Worksheet
Curated OER

Rotational Symmetry

For Students 10th
In this rotational symmetry worksheet, 10th graders identify and compare 10 different figures illustrated on the sheet. They write the order of rotational symmetry seen in each figure as compared to the others. They also define an object...
Lesson Plan
Curated OER

Right Triangles

For Teachers 4th - 8th
Learners classify triangles and make connections regarding angle measurements and attributes of acute, right, and obtuse triangles. They listen to teacher define and explain triangles. Everyone imagines a place where a broken wing for a...
Worksheet
Curated OER

Shapes

For Students 4th - 5th
In this geometry instructional activity, students analyze 9 drawings of geometric shapes and solid figures. Students write the name of each shape. There is no word bank.
Worksheet
Curated OER

Geometry

For Students 4th - 5th
In this congruent figures worksheet, students analyze a geometric shape and choose from the answer box any figures that are congruent to that shape. There are 3 problems.
Lesson Plan
Curated OER

2-D Geometry

For Teachers 3rd
Third graders describe and compare attributes of two-dimensional shapes. They explain geometric terms, angles and shapes. Students demonstrate each vocabulary word with their body and they mirror the body positions associated with each...
Worksheet
Curated OER

Geometry Assessment: Solid Figures

For Students 5th - 6th
In this geometry assessment worksheet, students match the drawing of two faces of the solid to the name of the solid for six geometric figures.
Worksheet
Curated OER

Cubes and Cylinders

For Students 1st - 3rd
In this geometry worksheet, students identify cubes and cylinders by coloring a given number of each shape red, green, blue, or yellow.
Lesson Plan
Curated OER

Who Let the Dogs Out?

For Teachers 8th - 10th
Students calculate the perimeter and area of polygons. For this geometry lesson, students apply formulas of perimeter to solve geometric problems. They calculate the area of a dog fence and create ways to keep the dog in that area.
Lesson Plan
Curated OER

Lesson 9-3 Practice A: Composite Figures

For Teachers 8th - 12th
In this composite figures worksheet, students solve twelve short answer problems. Students find the area of figures composed of various polygons given a sketch of the figure with side lengths labeled.
Handout
National Institute of Open Schooling

Chemical Bonding

For Students 7th - 12th Standards
Name is Bond, covalent bond. Through readings and answering questions, classes explore the different types of chemical bonds, their characteristics, valence shell electron pair repulsion theory, and atomic orbitals. 
Lesson Plan
Curated OER

Exploration with Geometric Solids

For Teachers 3rd - 5th
Students reinforce geometric concepts by playing "Guess My Solid." Through a process of elimination, they determine the shapes of mystery solids. Finally, students use various materials to construct their own geometric figures.
Worksheet
Curated OER

Polygon Sum Conjecture

For Students 10th
In this geometry worksheet, 10th graders identify the missing angles using the polygons sum conjecture. They measure exterior and interior angles using their angle theorems. There are 63 problems.
Lesson Plan
Think Map

Know Your Polygons!

For Teachers 3rd - 5th Standards
Shape shifters recognize characteristics of polygons. Embracing language arts skills in addition to math, they use a thesaurus to pinpoint specific attributes of a set of polygons. They also participate in a 21-question guessing game...
Worksheet
Curated OER

Building Blocks of Geometry

For Students 9th - 11th
For this geometry worksheet, students answer questions about midpoints, distance, lines and segments. They are given different shapes and asked to calculate the angles, and sides of polygons.
Lesson Plan
Curated OER

Teaching Polygons using Technology

For Teachers 3rd
Third graders utilize different types of computer programs, such as Microsoft paint and Microsoft Word to study and create different types of polygons. They use PowerPoint to create a story about a shape and others that it meets during a...