Lesson Plan
Curated OER

Geometric Probablitiy: Spinners and Dartboards

For Teachers 8th - 10th
Slearners explore and analyze the properties of geometric areas.  In this geometry instructional activity, sstudents use technology to simulate spinners and dartboards in order to fing areas of circles and sectors of circles and...
Lesson Plan
Pennsylvania Department of Education

Tetrominoes and Translations

For Teachers 7th - 9th
Young scholars explore geometry by participating in a pattern identification activity. For this tetrominoes lesson, students define the characteristics of congruent and symmetrical shapes. Young scholars practice translating shapes...
Lesson Plan
Curated OER

Creating Tessellations

For Teachers 3rd
Third graders explore the history of tessellations; then use art and geometry to create an original tessellation.
Lesson Plan
Curated OER

"Geotown" Scrapbook

For Teachers 3rd - 5th
Learners create a scrapbook. In this geometry instructional activity, students use digital cameras to take pictures of geometrical concepts. Learners use the pictures to create a "Geotown" scrapbook.
Worksheet
Curated OER

Congruence Activity

For Students 5th Standards
In this congruency worksheet, 5th graders complete 4 questions about congruent figures and transformations. Page has links to additional activities.
Lesson Plan
Curated OER

An Application of Congruence

For Teachers 9th - 10th
Students solve triangles using the properties if congruency. In this geometry lesson plan, students apply congruent and similar figures to solve real world and math problems. They show they are able to follow instructions.
Lesson Plan
Curated OER

Topology and Geomery

For Teachers 6th - 9th
Students relate topology to polygons. In this geometry lesson, students make the connection between different shapes and topologically equivalent relationships. They use Mobius strips to create and move shapes around.
Lesson Plan
Curated OER

Paper Packaging Design

For Teachers 8th - 10th
Pupils create packages with a maximum capacity. In this geometry lesson plan ,students estimate using whole numbers, decimals and fractions. They calculate length, weight and mass of packaging.
Lesson Plan
Curated OER

When Am I Ever Going to Use this?

For Teachers 8th - 10th
Students solve problems using equations and properties of integers. In this algebra lesson, students solve problems using ratio and proportion and graph their answers on a coordinate plane. They solve word problems using geometry.
Lesson Plan
EngageNY

Informal Proof of AA Criterion for Similarity

For Teachers 8th Standards
What does it take to show two triangles are similar? The 11th segment in a series of 16 introduces the AA Criterion for Similarity. A discussion provides an informal proof of the theorem. Exercises and problems require scholars to apply...
Lesson Plan
Curated OER

Fractals

For Teachers 10th - Higher Ed
Students explore the concept of fractals. In this fractal lesson plan, students use applets to explore Koch's Snowflake, Sierpinski's Triangle, and other fractals. Students develop these concepts through exploration and teacher guided...
Lesson Plan
Curated OER

Tantalizing Tessellations Lesson III: Creating a Slide Translation

For Teachers 6th - 8th
Learners watch and discuss an M. C. Escher video, use what they have learned to explain and apply their knowledge of tessellations in order to create a slide translation, present their findings in a 12" x 18" poster, and explore...
Lesson Plan
Curated OER

Cracks on the Walls

For Teachers 9th - 12th
Students observe the cracks in school walls and pavements. In this geometry lesson, students explore the factors to be considered before building a structure. They complete a graphing and calculation worksheet after the lesson.
Lesson Plan
Curated OER

Unit Perimeters and Areas

For Teachers 9th - 11th
Students use Geometers SketchPad to find the area and perimeter of several shapes. In this geometry lesson, students determine area of rectangles and progress through irregular polygons. None of the referenced worksheets are included...
Lesson Plan
EngageNY

The Scaling Principle for Area

For Teachers 9th - 10th Standards
As they investigate scaling figures and calculate the resulting areas, groups determine the area of similar figures. They continue to investigate the results when the vertical and horizontal scales are not equal. 
Lesson Plan
EngageNY

Review of the Assumptions (part 1)

For Students 9th - 10th Standards
What was the property again? Tired of hearing this from your pupils? Use this table to organize properties studied and as a reference tool for individuals. Learners apply each property in the third column of the table to ensure their...
Lesson Plan
EngageNY

Congruence Criteria for Triangles—AAS and HL

For Students 9th - 10th Standards
How can you prove it? Guide classes through an exploration of two possible triangle congruence criteria: AAS and HL. Learners connect this criteria to those previous learned and also explore criteria that does not work. The instructional...
Lesson Plan
West Contra Costa Unified School District

Solving Quadratic Equations – Alternative Methods

For Teachers 9th - 12th
There's more than one way to solve quadratic equations. Scholars learn how to solve quadratic equations using alternate methods. They use completing the square by making the linear coefficient even and the leading coefficient a perfect...
Lesson Plan
Curated OER

Symmetrical Snowflakes

For Teachers 1st
First graders, exploring lines of symmetry, follow directions to create a symmetrical snowflake from their own homemade icing. As a class, they discuss lines of symmetry and determine if specific shapes are symmetrical. After the lesson,...
Lesson Plan
Curated OER

Polygon Quilt

For Teachers 3rd - 5th
Pupils participate in a game with different types of polygons. They use triangles to create as many polygons as possible. They also review their colors by having different polygons be a different color.
Lesson Plan
Curated OER

Conic Sections and Locii

For Teachers 9th - 11th
Learners differentiate between ellipse and hyperbola. In this algebra lesson plan, students graph and solve elliptical equations. They use the cabri program to create the different conics and move them around.
Lesson Plan
Curated OER

Reflecting a Triangle in the Coordinate Plane

For Teachers 9th - 12th Standards
Learners explore geometric concepts using technology. They manipulate the TI to find important math topics. This activity requires a TI-84 or higher.
Lesson Plan
Curated OER

Tessellations with Regular Polygons

For Teachers 9th - 12th Standards
Show your learners how to create tessellations using different polygons. This is achieved by having students make observations of polygons to find the ones that will tessellate.
Lesson Plan
Curated OER

Tantalizing Tessellations Lesson III: Creating a Slide Translation

For Teachers 6th - 8th
Middle schoolers explore tessellations and the artwork of M.C. Escher. They view and discuss a video about M.C. Escher, create a slide template out of cardboard, and create a poster with their tessellation pattern.