Activity
Illustrative Mathematics

Reflections and Isosceles Triangles

For Teachers 9th - 11th Standards
Geometers explore symmetries of isosceles triangles by using rigid transformations of the plane. They complete four tasks, including congruence proofs, which illustrate the relationship between congruence and rigid transformations. The...
Lesson Plan
Curated OER

Invertebrate Phyla

For Teachers 4th - 12th
Students explore the invertebrate phyla. They discuss the characteristics of the invertebrate Phyla in the Kingdom Animal. Students classify organisms into Phyla based on their characteristics. They distinguish radial symmetry, bilateral...
Lesson Plan
Curated OER

Constructing Perpendicular Bisectors

For Teachers 10th
Tenth graders investigate parallel lines and the angles formed when cut by a transversal. In this geometry lesson, 10th graders construct perpendicular lines and discuss midpoint, segments and perpendicular bisectors. They relate...
Lesson Plan
Curated OER

Slides, Flips. Turns......It's All On A Memory Book Page

For Teachers 4th
Fourth graders use tangram sets to investigate the congruence of shapes. They use congruent shapes to demonstrate the properties of slides, flips, and turns. They complete a math journal entry that describes and illustrates each concept.
Lesson Plan
Curated OER

Old Glory

For Teachers 6th - 8th
Students utilize mathematical concepts such as: measurement, ratio and proportion and geometric probability to analyze the components of the U.S. Flag. They collect, organize and interpret data by constructing charts, tables and graphs...
Lesson Plan
Curated OER

Technology Integrated Lesson

For Teachers 8th - 10th
Students investigate symmetry in the real world. In this geometry lesson, students inter-relate math and technology. They create and name a variety of polygons.
Lesson Plan
Curated OER

Governor's Garden

For Teachers 9th - 12th
Learners review types of polygons and list several examples of each. They assume the role of a landscape artist interviewing for a job. They create sketches of their plans for six polygonal gardens and write an expository paragraph...
Lesson Plan
Curated OER

Math/Technology: Symmetry

For Teachers 4th
Fourth graders, using KidPix, use stamps and pencil tools to illustrate which pictures have symmetry. They add text boxes to explain their answers in math terms. Students practice skills in rotation, reflection, and translation on an...
Lesson Plan
Curated OER

No-Three-In-A-Line Again

For Teachers 9th - 12th
Students interpret information and results in context while using words and symbols to generalize patterns. They use symmetry and angle properties of polygons to solve practical problems and identifying invariant properties under...
Lesson Plan
Curated OER

More No-Three-In-A-Line

For Teachers 4th
Fourth graders read Mary's problem and make sure that they examine it. After some discussion, let the class work on the problem in their groups. They then take turns in putting a picture of their arrangement on the board.
Lesson Plan
Curated OER

Investigating the properties of a circle

For Teachers 7th - 10th
Students use wax paper to look at different properties of circles such as chords, tangent lines, inscribed angles, and inscribed angles in a semi-circle, as well as finding the center of the circle, and use GSP to investigate cyclic...
Lesson Plan
Hawaiʻi State Department of Education

Peace Quilt

For Teachers 5th
Learners explore color, shape, line, balance, radial symmetry, unity, repetition, and pattern as they make a peace quilt inspired by those made by Hawaiian women in the 1800s. After learning a bit about the history or peace quilts, the...
Lesson Plan
Curated OER

Animal Characteristics

For Teachers 4th
Allow your students to review what they learned about animal characteristics with this PowerPoint. This slideshow includes 9 multiple choice questions and an answer key at the end. Tip: You can use this as an assessment by having your...
Worksheet
Curated OER

Angles Activities

For Students 5th - 8th
A series of geometry worksheets have mathematicians constructing, dissecting, overlapping, and measuring as they analyze angles in various contexts. Learners use symmetry and reflections in a compass rose to write instructions on...
Worksheet
Curated OER

Which One is an Insect?

For Students 2nd - 3rd
In this science worksheet, learners categorize 18 words as either insects or not insects. Students write the words in a two-column chart under the correct category.
Lesson Plan
Virginia Department of Education

Distance and Midpoint Formulas

For Teachers 9th - 11th Standards
Small groups work through two guided activities to derive the distance and midpoint formulas for the coordinate plane. The activities begin with concrete examples and move to abstract.
Lesson Plan
EngageNY

Analyzing a Graph

For Teachers 9th - 10th Standards
Collaborative groups utilize their knowledge of parent functions and transformations to determine the equations associated with graphs. The graph is then related to the scenario it represents. 
Lesson Plan
Curated OER

THE MEAN INDEX CARD

For Teachers 6th - 8th
Students cut an index card to create three similar right triangles and explore the congruencies and proportions that exist. They investigate the properties of lines and concepts of congruency, similarity, tangency and symmetry of...
Lesson Plan
Curated OER

Geometry in Tessellations

For Teachers All
Students examine tessellations and their geometric properties. Students also develop a better understanding of lines, planes, angles, and polygons.
Lesson Plan
Curated OER

Mondrian, Math, and Amazing Colors

For Teachers K - 2nd
Pupils study geometric shapes, lines, and the primary colors as they create Mondrian-like art prints.
Lesson Plan
Curated OER

Comparing and Contrasting

For Teachers 2nd - 4th
Pupils practice compare and contrast skills. In this science and language development lesson plan, students complete a T chart generating traits of a snail and a clam. Pupils complete a related worksheet.
Lesson Plan
Curated OER

As the Bird Flies

For Teachers 7th - 8th
Students investigate the properties of lines and congruent triangle theorems as well as apply geometric properties and relationships to real-world mathematical problems. Given two different scenarios, they examine maps that have been...
Lesson Plan
Curated OER

Exploring the Normal Curve Family

For Teachers 9th - 11th
Students find different characteristics of the bell curve. In this statistics instructional activity, students analyze a family for a specific characteristic. They identify the shape, center, spread and area as they analyze the...
Activity
Illustrative Mathematics

Is This a Parallelogram?

For Teachers 9th - 12th Standards
If both pairs of opposite sides of a quadrilateral are congruent, is the quadrilateral a parallelogram? This task asks learners to determine the answer and to support their answer with a proof. The resource includes a commentary for...