Activity
Illustrative Mathematics

Dilating a Line

For Teachers 9th - 12th Standards
High School geometers verify through experimentation certain properties about dilations. This multi-step problem challenges them to construct examples of dilations to verify specific facts, the final step provides an opportunity to more...
Lesson Plan
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Shapes from Shapes

For Teachers K
Geometric shapes are really cool. Examine triangles, quadrilaterals, trapezoids, rhombuses, parallelograms, pentagons, and hexagons with your class. They draw large shapes and small shapes then compare them to understand their shapely...
Organizer
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Label the Pictures (Above, Behind, Below, Beside, In Front of)

For Students 2nd - 4th
A cross-curricular approach to prepositions includes a geometry aspect as learners label eight pictures of shapes to indicate their positioning. Each picture has two shapes, some with arrows to show which shape's location scholars are...
Lesson Plan
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Euclidean Direct Proofs

For Teachers 9th - 10th
Learning how to prove theorems in geometry can be challenging. This resource explains what a proof is, and the different styles for proofs. It also contains links to web-based practice problems that help guide learners though example...
Lesson Plan
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Shaping Up!

For Teachers K Standards
Kindergartners are introduced to basic shapes. Learners spend 45 minutes a day in geometry centers carrying out the activities outlined in this ambitious plan. There are games, hands-on activities, interactive websites, art projects,...
Lesson Plan
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Investigation- On The Surface

For Teachers 7th - 12th
Students will examine solids to determine which has the least surface area. They will also understand the use of units, square units, and cubic units. There is also the teaching and application of geometry formulas to perform calculations.
Lesson Plan
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Exploring Perimeter

For Teachers 3rd - 5th
Students explore perimeter. In this geometry and measurement lesson, students create squares and rectangles using given perimeters. Students construct four sided shapes with given perimeters using the computer program "Math Keys:...
Lesson Plan
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Searching for Angles and Lines

For Teachers 6th - 8th
Middle schoolers work to find and reinforce concepts related to lines and angles. They identify the characteristics of shapes that have one, two, and three dimensions. The students also work on definitions related to the geometry of shapes.
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Area And Perimeter Using Pentominoes

For Teachers 3rd
Third graders engage in an enrichment lesson exploring the concepts of area and perimeter. They construct new pentominoes that are 3 times the size of normal ones and then identify the area and perimeter measurements. They then create a...
Lesson Plan
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Fraction Flags

For Teachers 1st - 6th
Students research flag designs and their geometric configurations. They design their own fraction flag and utilize the concepts of measurement, geometry and fractions to their designs. Each student attaches a craft stick or short dowel...
Lesson Plan
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Samoan Siapo Bark Cloth

For Teachers 1st - 6th
Students research designs of traditional Samoan Siapo bark cloth and identify the fabric's features. They reproduce traditional Samoan designs on a torn brown paper bag. Afterward, they solve the division and decoration of the area of...
Lesson Plan
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Tin-Foil Twinkles

For Teachers 4th - 12th
Students compare and discuss characteristics and properties of 2- and 3-dimensional shapes. They construct 3-dimensional paper star figures, imaginatively customizing them with art tools and craft materials. Students analyze their...
Lesson Plan
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Geometric Applications

For Teachers 8th - 9th
In this geometry worksheet, students solve 5 word problems. Each of the problems involves finding one side of a right triangle. Story problems relate the Pythagorean Theorem to building ramps, shadows, and the length of a banner.
Lesson Plan
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Area and Volume

For Teachers 6th - 8th
Use this geometry review worksheet to have learners complete nine problems involving transformations, area, volume, and unit conversions. They answer one multiple choice question on estimating lengths.
Worksheet
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Points, Lines, and Line Segments - Homework 16.1

For Students 4th - 5th
In this geometry learning exercise, students complete a homework assignment in which they name 3 lines and line segments. They write parallel, intersecting, or perpendicular, to describe the relationships between 4 pairs of lines. They...
Worksheet
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Explore Perimeter and Area - Homework 18.1

For Students 3rd - 6th
In this geometry worksheet, students complete a homework assignment in which they draw rectangles that have the same area but different perimeters and vise versa. They draw a rectangle with a given area and perimeter.
Lesson Plan
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Volume and Surface Area, A Sweet Activity

For Teachers 1st - 12th
Geometry.... sweet! Using sugar cubes, learners build rectangular prisms of different sizes and shapes. They glue them together and assess volume. Then they color the outer sides to visualize and compute surface area. To make a visceral...
Lesson Plan
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Chess Math

For Teachers 4th - 5th
Students review angles. In this geometry lesson plan, students become chess players on a floor chess board. When they make a move, they need to identify the angle of their movement. In the lesson plan it says the "degree" of the angle,...
Lesson Plan
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Circles, Squares, Triangles and Rectangles In Our World

For Teachers Pre-K - 2nd
Here is an engaging geometry lesson which has students identify the properties of shapes and cut shapes out of magazines. They make cookies using cookie cutters in various shapes.
Lesson Plan
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Discover the Pythagorean Theorem

For Teachers 6th - 8th
Students explore the Pythagoras theorem. In this geometry activity, students make right triangles and identify the parts of the triangle. Students complete measurements of the sides of the triangle.
Worksheet
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Find the Shapes in a Picture

For Students K - 1st
Use coloring to remind young learners that geometry is all around them! A simple image of a house, sun, and tree becomes the format for several basic shapes. The instructions direct scholars to trace and color each shape using a...
Lesson Plan
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Measure: Bearings and Scale Drawings

For Teachers 4th - 6th
Pupils practice drawing geometric figures. In this geometry lesson, learners complete an activity that requires them to draw angles and shapes to the nearest degree.
Worksheet
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Is This a Line of Symmetry?

For Students 4th - 6th
Here is a geometry skills practice worksheet in which learners respond to six questions that require them to identify images that have symmetry.
Worksheet
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Are the Dotted Lines, Lines of Symmetry?

For Students 3rd - 5th
Here is a geometry skills practice worksheet in which learners respond to eight questions that require them to identify lines of symmetry.

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