Assessment
Mathed Up!

#### 2D and 3D Shapes

For Students 6th - 9th Standards
What a great assessment to give young mathematicians in order to test their knowledge on two- and three-dimensional shapes. Learners name various shapes, identify the number of edges, faces, and vertices, match an unfolded version of a...
Lesson Plan
Curated OER

#### Partitioning a Hexagon

For Teachers 7th - 9th Standards
The task at hand is to partition a hexagon into two, four, and eight congruent figures. Make sure to give your wizards a sheet of triangle grid paper on which to decompose the hexagons. Have them explain which rotations, reflections, or...
Lesson Plan
Illustrative Mathematics

#### What is a Trapezoid? (Part 2)

For Teachers 4th - 6th Standards
This collaborative activity investigates the meaning of a trapezoid and a parallelogram. It begins by presenting two different definitions of a trapezoid. Learners are to reason abstractly the difference between the two definitions and...
Lesson Plan
Curated OER

#### What a Square

For Teachers 3rd - 8th
Students examine the painting "Old Man With A Gold Chain" by Rembrandt. They identify geometric shapes in the painting, measure these shapes and compare the relationships of these measurements.
Lesson Plan
Curated OER

#### We Have Work to Do!

For Teachers K - 2nd
An excellent lesson awaits your young scientists! In it, learners are invited to explore the world of pulleys, levers, and planes; simple machines that make lifting heavy things much, much easier. They watch video, and engage in hands-on...
PPT
Curated OER

#### Visualizing and Naming Polygons

For Teachers 5th - 6th
A really useful resource contains 116 slides covering basic geometric concepts related to 2-D or plane shapes. Shape properties, translations, reflections, congruence, symmetry, and grid work are all laid out in a comprehensive and...
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.
Lesson Plan
Curated OER

#### Looking Through the Algebraic Lens

For Teachers 3rd - 5th
Students work with rectangles to find generalizations for adding and subtracting odd and even numbers in part one of the lesson plan. In part two, students use geoboards to construct polygons, look for patterns, and find a general rule.
Lesson Plan
Teachers Network

#### A World of Symmetry: Math-Geometry

For Teachers 4th - 6th
Define and identify the three basic forms of symmetry translation, rotation, and glides with your class. They cut out and arrange paper pattern blocks to illustrate symmetry, create a Cartesian graph, and design a rug with a symmetrical...
PPT
Curated OER

#### Buoyancy and Viscosity

For Teachers 8th - 10th
Some of these beautiful diagrams should help your students understand the connections between pressure and flight. Pressure and density are also discussed, and a number of links are included to give fantastic interactive examples of...
Activity
American Museum of Natural History

#### Thinking in the Three Dimensions

For Students 6th - 12th
Discover different dimensions with paper folding. Pupils first read about zero, one, two, and three dimensions, and then learn about the fourth dimension, time. They then use origami to create models of shapes in three dimensions and use...
Performance

For Teachers 9th - 12th Standards
Boost lemonade sales by using the perfect container. For a given volume, future entrepreneurs design a container that will have the least surface area and by extension, the least cost of material. They create a two-dimensional net of...
Lesson Plan
Space Awareness

#### What is a Constellation

For Students 1st - 5th Standards
Why do some stars in a constellation appear brighter than others? Using a get-up-and-move astronomy activity, scholars explore perspective and the appearance of constellations in the sky while developing an understanding of the...
Assessment
CPALMS

#### 2D Rotations of Triangles

For Students 9th - 12th Standards
Where does the line of rotation need to be to get a cone? Pupils respond to three questions involving rotating a right triangle about different lines. The scholars describe the solid created along with providing details about its...
Assessment3:00
Mathed Up!

#### Symmetry

For Students 7th - 10th Standards
Eleven problems provide pupils the opportunity to find the lines of symmetry or identify rotational symmetry. Scholars alter designs to make them symmetrical, learn to recognize signs that are symmetrical, and identify the type of...
Worksheet
Math Worksheets 4 Kids

#### Sorting 2-D and 3-D Shapes

For Students K - 2nd Standards
Challenge mathematicians to examine and sort a variety of 2-D and 3-D figures with a 10-problem solid shapes worksheet.
Activity
Denton Independent School District

#### Pieces to the Puzzle Fraction Project

For Teachers 4th - 6th Standards
Four polygons each have a fraction with unlike denominators printed on them. Creative math minds select several shapes to create a design with and then write and solve a math problem involving the addition of all of the fractions...
Lesson Plan
Illustrative Mathematics

#### Finding Areas of Polygons, Variation 1

For Teachers 5th - 9th Standards
An exercise in finding the area of polygons by decomposing into triangles and composing into rectangles is the focus of this resource. Make several copies of the worksheet for each participant. Ask learners to use colored pencils to...
Worksheet
Curated OER

#### Similar Shapes

For Students K - 1st Standards
In geometry, similar and congruent shapes are often confused. Shapes that are similar are the same shape, but a different size. This activity gives young learners some practice in identifying similar shapes. There are five polygons...
Lesson Plan
Curated OER

#### Sculpture in Balance

For Teachers 3rd - 5th
Students discuss the difference betwen two-dimensional vs. three-dimensional art. In this art lesson, students discuss what symmetry or balance is in art and construct a symmetrical and an asymmetrical mobile.
Lesson Plan
Curated OER

#### Congruent Polygons: Copying Stretchy Shapes

For Teachers 3rd
Third graders investigate congruent polygons through dance. In this congruency lesson, 3rd graders do the "brain dance" as a warm up. They review polygon names by singing "The Polygon Chant," before mirroring congruent shapes with a...
Worksheet
Curated OER

#### Spotting Polygons

For Students 2nd - 3rd Standards
See all sides of the story with a worksheet on geometric shapes! After studying the example at the top, which matches polygons with solid figures, second graders circle shapes that are named in the directions. Next, they match polygons...
Lesson Plan
Utah Education Network (UEN)

#### Geo Shapes

For Teachers Pre-K - 2nd Standards
Invite your first graders to compose and decompose two and three-dimensional figures with this fun, hands-on lesson. They investigate and predict the results of putting together and taking apart two-dimensional shapes with rubber bands...
PPT
Curated OER

#### Calculate the Area of Rectangles

For Teachers 4th - 6th
A wonderful resource just waiting to be used. Provide learners with a complete explanation on how to calculate the area of a rectangle. After this process is covered, they will see how they can use rectangles to calculate the area of...