Lesson Plan
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Kindergarten: Geometry in Our World (Centers)

For Teachers K
Students identify attributes in real-life objects and models of solids and connect these attributes to characteristics of shapes such as circles, triangles, squares, and other rectangles. They discuss the ability of the object to roll,...
Lesson Planet Article
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Curated OER

How to Implement Project Based Learning to Engage Students

For Teachers 3rd - 12th
Can a math teacher employ project-based learning? Learn how one great math teacher uses PBL to design math projects that provide learners with a more challenging and holistic learning experience. A wonderful article, that includes...
Lesson Plan
Curated OER

Problem Solving/ Holistic Lesson Plan: Paper Structure

For Teachers 6th - 12th
Students observe geometric relationships in buildings and structures. They reason why structures are constructed in a specific way by applying geometric concepts. They construct a shelter using their geometric knowledge.
Lesson Plan
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Discovering Pi/Welcome to Pi Day

For Teachers 9th - 12th
Students explore pi. In this circle measurement lesson plan, students define and identify radius, diameter, circumference, and perimeter. Students work in groups to measure several plastic lids and record their findings. Students compare...
Lesson Plan
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Tangram Geometry

For Teachers 1st - 5th
Students listen to a story involving Tangram pieces. Students use Tangram pieces to complete shapes using an outline of a design.
Worksheet
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Classifying Triangles Using Sides

For Students 4th - 5th
In this geometry learning exercise, students answer 8 fill in the blank questions where they must examine 5 different complex geometric figures to classify triangles.
Lesson Plan
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Secret Writing Devices

For Teachers 3rd - 8th
Elementary and middle schoolers explore the world of secret writing, otherwise known as cryptography. After an interesting introduction to the activity, learners utilize a decoder badge which uses the St. Cyr cipher - which is a cipher...
Lesson Plan
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Geometry: Tessellations

For Teachers 2nd - 3rd
Students create tessellations with computer software while applying their knowledge of reflections, rotations, and translations.
Lesson Plan
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Lesson 9-3 Practice B: Composite Figures

For Teachers 9th - 12th
In this composite figures worksheet, students solve 11 short answer problems. Students find the area of figures composed of various polygons. Students find the area of each figure given a sketch of the figure with various measurements...
Worksheet
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Challenge: Skills and Applications Lesson 1.3

For Students 10th - 12th
In this skills worksheet, students explain the Segment Addition Postulate, provide examples and counter examples and determine congruent line segments.  This one-page worksheet contains 11 multi-step problems.
Worksheet
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Challenge: Skills and Applications Lesson 2.2

For Students 9th - 12th
In this truth tables worksheet, students solve 5 short answer problems. Students make a truth table for five conditional statements.
Worksheet
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Challenge: Skills and Applications Lesson 3.3

For Students 9th - 12th
In this angle measures learning exercise, high schoolers solve 9 short answer problems. Students find values for x and y given two parallel lines cut by a transversal. High schoolers use alternate interior, supplementary, and exterior...
Lesson Plan
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Points, Lines, Planes, and Space

For Teachers 9th - 12th
In this points, lines, planes, and space worksheet, students solve word problems dealing with points, lines, planes, and space. Students complete 20 individual problems and 20 group problems.
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The Flat Earth

For Teachers 9th - 11th
Students differentiate between different planes. In this geometry lesson, students differentiate between a plane and a sphere. They discuss the Great Circle, Geodesic and Lune as it relates to the earth.
Lesson Plan
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Illustrative Mathematics

Shortest Line Segment from a Point P to a Line L

For Teachers 9th - 11th Standards
One of the hardest skills for many young geometers to grasp is to move beyond just declaring obvious things true, and really returning to fundamental principles for proof. This brief exercise stretches those proving muscles as the...
Lesson Plan
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Identifying and Describing Polygons

For Teachers 8th - 10th
Students identify the different properties of polygons. In this geometry lesson, students differentiate between polygons and non-polygons. They review important vocabulary to help them understand the properties of polygons.
Lesson Plan
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It's a Ball, It's a Sphere ... No, It's a Dodecahedron

For Teachers 3rd
Third graders construct a dodecahedron that displays facts about two and three-dimensional figures. They use a pattern to construct a dodecahedron after writing facts about geometry onto each of the figure's twelve faces.
Lesson Plan
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Varieties of Quadrilaterals

For Teachers 4th - 7th
Students classify quadrilaterals, In this quadrilaterals lesson plan, students watch a video about parallelograms, discuss the different types of quadrilaterals, and complete a worksheet classifying quadrilaterals.
Lesson Plan
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Measurement of a Central Angle

For Teachers 9th - 11th
Learners calculate the measurement of a central angle. In this geometry lesson, students identify properties of circles. They use Cabri software to create and analyze graphs.
Lesson Plan
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Arc Measurement Based on The Measurement of a Central Angle

For Teachers 9th - 10th
Students define keywords that are important to solve problems. In this geometry instructional activity, students find the arc length and angle of a circle. They convert between radians and degrees.
Lesson Plan
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Exploring Chords: Products of Chord Segments

For Teachers 7th - 10th
Students identify the properties of chords. In this geometry lesson, students multiply chord segments to find the solution to their problem. They construct two chords that cross on  a circles.
Activity
PBS

Using Symmetry to Create Corporate Logos

For Teachers 4th - 8th Standards
Young mathematicians investigate the use of symmetry in graphic design. After first learning about reflection, translational, and rotational symmetry, children use this new knowledge to identify symmetry in letters of the...
Lesson Plan
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A Perpendicular Pilgrimage

For Teachers 9th
Ninth graders design a safe passage through a 2-D obstacle. In this geometric math lesson, 9th graders engage in a hands on activity to better understand the concept of geometric and algebraic perpendicularity. Students will work in...
Lesson Plan
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Spin Your Turbines

For Teachers 8th - 11th
Students relate electrical power and how it works to math. In this geometry lesson, students analyze how a hydroelectric plant works and calculate the amount of electricity that is produced by a typical generator. This lesson uses...

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