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Unit Plan
PBS

Accessible Shapes

For Teachers 6th - 8th Standards
All the 2-D and 3-D measurement work you need is in one location. Divided into three sections, the geometry lesson plans consist of visualization of three dimensions, classifying geometric figures, and finding surface area and volume....
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Interactive
CK-12 Foundation

Proofs: Angle Pairs and Segments—The Three Angle Problem

For Students 9th - 11th
Finding the sum of the measures of three angles is easy, unless you have no clue what the measures are. Learners use an interactive diagram to see a geometric problem in a different way. A set of challenge questions takes them through...
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Interactive
CK-12 Foundation

Special Triangle Ratios: Special Right Triangle Ratios

For Students 9th - 12th Standards
Go from one side length to any other side length with special right triangles. Individuals use the interactive to investigate the ratio of sides in 45-45 and 30-60 right triangles. Scholars make generalizations about the types of special...
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Lesson Plan
EngageNY

Law of Sines

For Teachers 11th - 12th Standards
Prove the Law of Sines two ways. The ninth segment in a series of 16 introduces the Law of Sines to help the class find lengths of sides in oblique triangles. Pupils develop a proof of the Law of Sines by drawing an altitude and a second...
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Printables
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Houghton Mifflin Harcourt

Unit 3 Math Vocabulary Cards (Grade 1)

For Students 1st Standards
Reinforce math vocabulary with a set of flashcards. Each card showcases a boldly typed word or a picture representation with labels. The topics are geometry related and include terms such as cones, faces, pyramids, sides, and more! 
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Lesson Plan
Math Solutions

Shape Sorting: Looking for Green!

For Teachers Pre-K - 1st Standards
Young mathematicians rotate, flip, and sort their way to an understanding of the different attributes of geometric figures. Using transparent yellow and blue shapes, children try to match congruent figures together to create...
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Lesson Plan
Curated OER

Writing Takes Shape!

For Teachers 4th - 8th
Students read The Greedy Triangle and discuss geometric solids. In this geometry lesson, students list the geo-solids in the world and create a graphic organizer to show where geo-solids exist.
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Lesson Plan
Curated OER

Corners and Sides

For Teachers 3rd - 4th
In this corners and sides worksheet, learners, with a partner, explore and calculate the answers to six word problems that involve a variety of different geometric shapes.
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Worksheet
Curated OER

2-Dimensional Shapes: Looking at Shapes

For Students 1st - 2nd Standards
Help scholars identify shapes more thoroughly by counting their attributes. They examine eight 2-dimensional shapes, recording the number of sides and corners for each writing the name. Consider creating a class poster together before or...
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Worksheet
Curated OER

2-Dimensional Shapes: Naming Shapes

For Students 1st - 3rd Standards
Get to know eight shapes by name: square, rectangle, triangle, pentagon, hexagon, and octagon. Young geometers write the correct name below each of these shapes, using a word bank for guidance. Then, they draw two of the shapes (hexagon...
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Worksheet
Curated OER

Congruency

For Students 3rd - 4th Standards
Which triangles are congruent? There are two sets of triangles here for scholars to examine in order to determine which of them are congruent. They use an example and explanatory introduction to guide them through this process. The first...
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Worksheet
Curated OER

Line of Best Fit

For Students 7th - 8th
In this line of best fit worksheet, students solve and complete 8 different problems that include plotting and creating their own lines of best fit on a graph. First, they study the samples at the top and plot the ordered pairs given on...
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Worksheet
Curated OER

To Be a Triangle Or Not To Be a Triangle?

For Students 10th
In this triangles worksheet, 10th graders solve and complete 10 different problems that include applying the Triangle Inequality Theorem. First, they use the illustrated triangles and the data table to test the theorem. Then, students...
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Worksheet
Curated OER

Understand Categories of Shapes

For Students K - 1st
This colorful set of shapes and figures is the data set learners need to fill out an extensive table. For each of 11 types of shapes or figures they record the quantity and how many corners and sides each has. This becomes more difficult...
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Worksheet
Curated OER

Understanding Categories of Shapes

For Students 2nd - 3rd
What are these shapes? Here are four shapes with some common attributes: they each have four parallel sides and four vertices. Scholars identify a rectangle, rhombus, square, and quadrilateral. Because there is an explanation written...
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Worksheet
Curated OER

Recognize and Draw Shapes

For Students K - 1st
What type of shape is this? Learners practice identifying shape attributes as they name a parallelogram and an oval and count the sides of a cube and a triangle. There are multiple-choice answers for the shape-name questions, so...
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Worksheet
Curated OER

Recognizing Shapes

For Students 1st - 2nd
What are these shapes? Learners examine pairs of six familiar shapes: circle, oval, triangle, hexagon, square, and rectangle. Each pair is placed together because of a common attribute, which is described above. Learners name the shapes...
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Worksheet
Curated OER

Recognize and Draw Shapes

For Students 1st - 2nd
Each of these 10 shapes comes with a question for learners to answer as they analyze its attributes. They examine the following shapes: hexagon, trapezoid, pentagon, circle, diamond, parallelogram, rectangle, triangle, cube, and oval....
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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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Worksheet
Curated OER

Triangles and Congruence

For Students 8th - 10th
Can your class construct triangles and determine congruence? Find out with this well put together worksheet. THey construct triangles to given specifications and identify if they are congruent. There are 3 muti-step problems to solve.
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Worksheet
Curated OER

Values of Geometrical Shapes: How Many?

For Students 3rd - 6th
Practice analyzing shapes using this shape breakdown worksheet. Your scholars examine 2 shapes and 2 figures, identifying the number of faces, vertices, edges, and sides each has. The instructions remind students that an answer of "0" is...
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Worksheet
Curated OER

Measurement: Perimeter

For Students 10th
In this perimeter worksheet, 10th graders identify and complete 9 different problems that include determining the perimeter of various figures. First, they complete the table by writing the number of sides in each figure listed on the...
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Worksheet
Curated OER

Symmetry Fun

For Students 7th
In this symmetry worksheet, 7th graders identify and complete 12 different lines of symmetry in polygons. First, they color all of the polygons that have a line of symmetry. Then, students circle all of the regular polygons and use the...
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Worksheet
Curated OER

Isosceles Triangles

For Students 9th - 12th
In this geometry worksheet, learners set up equations to solve for the missing angle or side of an isosceles triangle. All the equations turn out to be linear and not quadratic. There are 15 questions.