Curated OER
Lesson 3: Measuring Angles
Students use a protractor to measure angles. They classify angles by type: right angle, acute angles, and obtuse angles. Students build and draw right, acute, and obtuse angles. They discuss how do people in various professions use...
Curated OER
Using Geometric Shapes in Architecture
Third graders identify two and three dimensional shapes used in architectural designs by viewing images on the Internet. For this geometry lesson, 3rd graders create their own building designs and identify the geometric shapes that...
Curated OER
Inked Geometric Mandalas
Fifth graders gain an appreciation for mandalas in many cultures. Compare and contrast designs from many cultures. They see geometric design in mandalas and become aware of symmetrical balance and radial balance. They create a mandala...
Curated OER
Gazebo Construction
Students create and give oral proposals for the construction of a gazebo using a blueprint created with Geometer's Sketchpad. They then build a gazebo model using the blueprints created and provide evidence why it should be selected for...
Curated OER
Using R&R to Teach Mathematics
Second graders create a shape garden. In this polygons lesson, 2nd graders practice making shapes using a geoboard and read the book The Greedy Triangle by Marilyn Burns. Students also design a shape garden using construction...
Curated OER
Geoboard Area
Students explore the basic geometric shapes and geometric shape vocabulary through the use of geoboards and virtual geoboards. They create a variety of shapes with a partner, build ten different rectangles on their geoboards, and...
Curated OER
Angles Everywhere
First graders find angles in their classroom. In this geometric figures lesson, 1st graders identify, describe and classify angles they see in their world. Students create pictures that contain angles and display them in the room.
Curated OER
Tessellations
Students learn and review basic geometric terms, definitions, and theory, including regular polygons, lines, angles, points, etc. They make a tessellating stamp and create a repeating work of art.
Curated OER
Terrific Tangrams
Third graders construct tangrams. In this tangrams lesson, 3rd graders manipulate basic shapes to construct tangrams. Students explore how shapes can be combined in different ways and develop spatial sense.
Curated OER
Bubbleology Mickey Mouse Style
Students investigate the effects of four different shaped wands and geometric shapes in a bubble solution. In this bubbleology instructional activity, the students build water and soap molecules. Students work in cooperative groups and...
Curated OER
Roll or Slide?
Students explore models of three-dimensional shapes. In this geometric shapes instructional activity, students use hands-on manipulatives to explore three-dimensional shapes. Students predict whether each shape will roll or slide.
Curated OER
Start at the Very Beginning
Students explore ocean ecosystems. In this cross curriculum art and oceans lesson, students create a collage featuring three-finger algae using sand paper, tissue paper, and construction paper.
Curated OER
Mirror Symmetry/Mirror Images
Students explore lines of symmetry in geometric shapes. In this geometry lesson plan, students construct angles using mirrors and rubberbands, then predict the number of images that will appear in the reflection. Students reproduce lines...
Curated OER
Shapes and Introduction to Geometry
Learners make a quilt. In this geometry lesson, students discuss patchwork quilts and learn some different geometric shapes and patterns that are commonly used. Learners explore designs with triangles and squares and then make their own...
Curated OER
Geometry of Democracy
Students explore the architecture of New England by identifying geometric shapes. In this architectural lesson, students examine photographs of classic building architecture and use a transparency to trace geometric shapes they...
Curated OER
Geometry: Cut, Construct and Think
Students explore polygons. In this geometry skills lesson, students complete an activity that requires them to solve geometry problems that involve polygons as they piece together geometric shapes. Students analyze the shapes they create...
Curated OER
Cut, Construct and Think 4
In this geometry activity worksheet, students cut a 6x6 according to the directions and construct the 4 listed shapes from the pieces. Students also respond to 5 questions that require them record details regarding the 5 listed shapes.
Texas Education Agency (TEA)
Geometry in Architecture #1
Discover how to analyze architecture from a geometric standpoint. The fourth installment of an 11-part unit on architecture first provides a presentation on axis, balance, basic form, formal, pattern, proportion, symmetry, and tripartite...
Mt. San Antonio Collage
Elementary Geometry
Your class may believe that geometry is a trial, but they don't know how right they are. A thorough math lesson combines the laws of logic with the laws of geometry. As high schoolers review the work of historical mathematicians and...
Inside Mathematics
Hexagons
Scholars find a pattern from a geometric sequence and write the formula for extending it. The worksheet includes a table to complete plus four analysis questions. It concludes with instructional implications for the teacher.
American Farm Bureau Foundation for Agriculture
Shapes in Agriculture
It's time to get crafty with shapes! Your future farmers demonstrate their geometric ability by building a farm using triangles, circles, rectangles, and squares. But first, scholars take part in a brainstorm session inspired by their...
Teach Engineering
Straw Bridges
Pairs work as engineering teams to design and build model bridges from drinking straws and tape. In this third segment in a series of 10, teams compete in an attempt to build the strongest bridge. To help with the design, the groups...
Mathematics Assessment Project
Generalizing Patterns: Table Tiles
As part of a study of geometric patterns, scholars complete an assessment task determining the number of tiles needed to cover a tabletop. They then evaluate provided sample responses to see different ways to solve the same...
Virginia Department of Education
3-D Figures
Scholars construct three-dimensional figures to study dimension and side views. Learners build models using linking cubes to match views of different sides. After practicing with models, they attempt to match three-dimensional drawings...