Lesson Plan
Curated OER

Area of Polygons

For Teachers 9th - 11th
Students engage in a lesson that is about the concept of polygons and focuses upon finding the area. They use formulas provided in the lesson in order to solve problems given by the teacher for independent practice. Geometric figures are...
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...
Assessment
Inside Mathematics

Expressions

For Teachers 9th - 12th Standards
Strive to think outside of the quadrilateral parallelogram. Worksheet includes two problems applying prior knowledge of area and perimeter to parallelograms and trapezoids. The focus is on finding and utilizing the proper formula and...
Lesson Plan
Curated OER

Symmetries of a Quadrilateral I

For Teachers 9th - 10th Standards
Learners examine the properties of quadrilaterals from the point of view of rigid motion. Different types of quadrilaterals are characterized by their symmetries, so learners explore the symmetries of a described quadrilateral to...
Lesson Plan
Curated OER

Kindergarten Geometry

For Teachers K
Students choose a square of any size and use yarn to show that all 4 sides are the same. They sort the traffic sign cards into groups of squares and non-squares. Also they make a square using Q-tips; tell how you know it is a square.
Lesson Plan
Curated OER

Tango's Story

For Teachers 5th
Fifth graders listen to "Grandfather Tang's Story" and use tangram pieces to create animals described by the main character.
Interactive
Curated OER

The Pythagorean Theorem

For Students 10th
In this geometry learning exercise, 10th graders answer questions about right triangles by identifying the 3 sides of the triangle. They analyze the different shapes of polygons and relate them to right triangles to find the sides using...
Lesson Plan
Curated OER

Meet the Polygon Family

For Teachers 4th
Fourth graders investigate regular polygons. In this regular polygon lesson, 4th graders explore the attributes of different polygons. Students work in groups to complete a KWL chart regarding polygons.
Lesson Plan
Curated OER

Placing Plates

For Teachers 2nd
Second graders investigate the task of making a large hexagonal plate by putting together smaller ones. The lesson plan has detailed example problems for the teacher to use during direct instruction. The manipulative activities...
Lesson Plan
Curated OER

Using Trigonometry

For Teachers 5th
Fifth graders explore the use of trigonometry to find unknown sides and angles in right-angled triangles, taking the concepts that were developed in the previous unit and looking at different ways of practicing the new skills. Students...
Lesson Plan
Curated OER

Attributes & Nets of a Cube

For Teachers 3rd
Third graders engage in a instructional activity that focuses on the attributes and forming of a cube. They construct a cube using different combinations while comparing a square with only two-dimensions. Students fold paper while...
Lesson Plan
Curated OER

Team Puzzles

For Teachers 4th
Fourth graders work in co-operative teams of four to complete a puzzle. Each student initially works independently, and then the team jointly puts together the four shapes they have individually made, to complete the puzzle.
Lesson Plan
Curated OER

Investigating the Idea of Tan

For Teachers 5th
Fifth graders use tan to solve problems involving right-angled triangles. They solve equations of the form tan(8) =a, for a between 180 degrees and 360 degrees. They state the value of tan (8) in special cases.
Worksheet
Curated OER

Geometry: 3D Objects

For Students 3rd - 4th
In this math worksheet, students examine 4 pictures of 3D objects and write the name of each. Students then study 3 pictures and figure the number of faces, edges and vertices on each.
Lesson Plan
Curated OER

Geometry and Symmetry

For Teachers 4th - 6th
Students examine tessellations and their geometric properties. The lesson plan and discussions may be used to develop students' understanding of polygons and symmetry as well as their ability to analyze patterns.
Worksheet
Curated OER

Christmas Tree Angles

For Students 5th - 8th
For this angles worksheet, students measure angles to make triangles and cut them out to make a Christmas tree. Students draw and cut 5 triangles to make their tree.
Lesson Plan
Curated OER

Exploring Areas of Irregular Polygons

For Teachers 9th - 12th Standards
Students solve for the area of different polygons. In this geometry lesson, students identify and differentiate between regular and irregular polygons. They use properties of irregular polygons to solve problems.
Lesson Plan
Curated OER

Ladybug Adventures

For Teachers Pre-K - 2nd
Students solve problems using mathematical skills. In this math lesson, the students use math concepts, to design a virtual path for a ladybug. The students will reinforce their skills in algebra and geometry concepts.
Lesson Plan
Curated OER

Pythagorean Theorem

For Teachers 7th - 12th
Students investigate the Pythagorean Theorem.  In this seventh through twelfth grade geometery lesson plan, students explore the Pythagorean Theorem and its converse and use it to find the length of the missing side of a right...
Lesson Plan
Curated OER

Dilation

For Teachers 10th
Tenth graders identidy and define various geometry terms, Students create exact replicas of a shape that is either smaller or larger than the original shape. Students prove that their entire shapes are larger or smaller in the same...
Lesson Plan
Curated OER

Math: Geometric Fun and Games

For Teachers 3rd
Third graders discover geometric shapes by completing a series of games and activities. Using ropes with knots tied every foot, they make shapes such as squares, triangles, and hexagons. In pairs, 3rd graders use pattern blocks to...
Lesson Plan
Curated OER

Tessellations

For Teachers 7th
Seventh graders investigate geometric shapes using tessellations. In this geometry instructional activity, 7th graders practice tessellations using different shapes. They create different designs using tessellations.
Lesson Plan
Curated OER

Transformations-Translations

For Teachers 10th - 11th
Learners perform transformations and translation on a coordinate plane. In this geometry instructional activity, students move shapes around on a graph identifying translation, image, and transformation. This instructional activity has...
Lesson Plan
Curated OER

"Geotown" Scrapbook

For Teachers 3rd - 5th
Students create a scrapbook. In this geometry lesson, students use digital cameras to take pictures of geometrical concepts. Students use the pictures to create a "Geotown" scrapbook.