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Lesson Plan
Illustrative Mathematics

Make Your Own Puzzle

For Teachers K - 2nd Standards
Puzzling over what geometry lesson to teach next? Look no further. This simple activity teaches young mathematicians how shapes can be decomposed into smaller figures, and how smaller figures can be assembled into larger shapes. To learn...
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Unit Plan
American Institute of Architects

Architecture: It's Elementary!—First Grade

For Teachers 1st - 3rd
Build an interest and appreciation for architecture in your young learners with this fun 10-lesson art unit. Engaging children in using their five senses, the class first observes the environment around them, paying special attention to...
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Unit Plan
Buffalo State

A Five Day Approach to Using Technology and Manipulatives to Explore Area and Perimeter

For Teachers 3rd - 6th Standards
Young mathematicians build an understanding of area and perimeter with their own two hands in a series of interactive geometry lessons. Through the use of different math manipulatives, children investigate the properties of rectangles,...
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Lesson Plan
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Illustrative Mathematics

The Geometry of Letters

For Teachers 3rd - 5th Standards
Use the alphabet as a tool for teaching your class about geometric figures. Break apart capital letters into line segments and arcs. Classify angles as right, acute, or obtuse. Identify parallel and perpendicular lines. An excellent...
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Lesson Plan
Illustrative Mathematics

Finding the Line of Symmetry

For Teachers 3rd - 5th Standards
Can you find the line of symmetry? That's what your students will demonstrate by completing this worksheet. The task gets increasingly difficult as shapes are included that have one line of symmetry, no lines of symmetry, and multiple...
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Printables
Math Worksheets 4 Kids

Solid Nets: With Tabs

For Teachers 1st - 6th
Get in shape with a series of worksheets about making 3-D geometric shapes. Learners use the example at the top of the page to model their shapes, which range from a simple cube or cone to a more complicated octagonal pyramid.
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Unit Plan
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State of Michigan

Pre-K Mathematics

For Teachers Pre-K - 1st Standards
Kick-start children's education with this pre-school math unit. Offering 31 different hands-on learning activities that develop young mathematicians' pattern and shape recognition, basic number sense, and much more, this is a must-have...
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Lesson Plan
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National Math + Science Initative

Using Linear Equations to Define Geometric Solids

For Teachers 9th - 12th Standards
Making the transition from two-dimensional shapes to three-dimensional solids can be difficult for many geometry students. This comprehensive Common Core lesson plan starts with writing and graphing linear equations to define a bounded...
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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...
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Lesson Plan
Santa Monica College

Introducing Measurements in the Laboratory

For Teachers 9th - Higher Ed Standards
We use basic units of measurement to break down things and communicate clearly. The first lesson in an 11-part series teaches the proper way to measure various items. It starts simply with measuring the dimensions and areas of geometric...
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Lesson Plan
National Security Agency

Awesome Area - Geometry and Measurement

For Teachers 2nd - 4th Standards
Break out those math manipulatives, it's time to teach about area! Capturing the engagement of young mathematicians, this three-lesson series supports children with learning how to measure the area of squares, rectangles, and other...
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Unit Plan
Mathematics Vision Project

Geometric Figures

For Teachers 10th - 12th Standards
Logical thinking is at the forefront of this jam-packed lesson, with young mathematicians not only investigating geometric concepts but also how they "know what they know". Through each activity and worksheet, learners wrestle with...
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Unit Plan
Mathematics Vision Project

Circles: A Geometric Perspective

For Teachers 10th - 12th Standards
Circles are the foundation of many geometric concepts and extensions - a point that is thoroughly driven home in this extensive unit. Fundamental properties of circles are investigated (including sector area, angle measure, and...
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Lesson Plan
Dick Blick Art Materials

Start with a Circle...

For Students K - 12th
The Golden Ratio. The Divine Proportion. Yup. It's math and art blended into one colorful activity. Young artists combine colored tissue paper circles and parts of circles to create geometric patterns. As a bonus, kids get to figure out...
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Lesson Plan
Math by Design

Transformations – Reflections

For Teachers 7th - 8th Standards
Scholars use interactive resources to figure out how to mathematically draw a reflection of a geometric shape viewed in a mirror. To conclude the activity, class members are asked to deduce the result of multiple reflections across...
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Activity
Exploratorium

Afterimage

For Teachers 4th - 8th
To illuminate how afterimage occurs, create a star, square, or other geometric-shaped light for learners to look at for 30 seconds. Then, have them explain what they see as they shift their focus to a blank wall. A full explanation of...
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Printables
K-5 Math Teaching Resources

Quadrilaterals Pack 1

For Students K - 2nd Standards
Thirteen different quadrilaterals make up this page of shapes with endless possibilities to learn and discover. 
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Printables
K-5 Math Teaching Resources

Quadrilaterals Pack 2

For Students K - 3rd Standards
Ten quadrilaterals make up two pages that can be cut, laminated, and made into a pack. The opportunities are endless with this resource!
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Lesson Plan
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American Chemical Society

Finding Volume: The Water Displacement Method

For Teachers 6th - 8th Standards
We have formulas for finding the volume of geometric shapes, but what if the shape is irregular? Lesson describes how to find volume through water displacement. After a demonstration, scholars practice in small groups. Then analysis...
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Activity
Illustrative Mathematics

Ice Cream Cone

For Teachers 9th - 12th Standards
Every pupil with a sweet tooth will be clamoring for this lab and analysis, particularly when they're allowed to eat the results! Volume and surface area formulas for cones are developed from models, and then extended to the printing of...
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Lesson Plan
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Illustrative Mathematics

Representing Half of a Circle

For Teachers 2nd - 4th Standards
Geometric shapes make great visual models for introducing young mathematicians to the concept of fractions. Looking at a series of four circles, students are asked to determine whether or not one half of each circle is shaded. To support...
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Activity
Aunt Annie's Crafts

Square Petal Envelopes

For Teachers 1st - 8th
Imagine making square envelopes out of circles. Yep, all you need are paper, scissors, a compass, and some glue. Kids explore the possibilities of geometric shapes with this activity.
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Activity
Museum of Science

Straw Bridges

For Teachers K - 6th Standards
There is never a bridge too far. Using common items, class members build bridges to span an opening. Pupils test different geometric shapes to determine which is the strongest. Learners use pennies to find the strength of their bridges...
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Lesson Plan
Sargent Art

Color Value Study

For Teachers 9th
I love geometric art because it applies mathematical reasoning to an artistic endeavor. Creative kids use scale values to highlight their complex, repetitive, geometric designs. Symmetry, angles, and congruence are three concepts that...

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