Lesson Planet
Search educational resources
  • Sign In Try It Free
  • AI Teacher Tools
    • Discover Resources Search reviewed educational resources by keyword, subject, grade, type, and more
    • Curriculum Manager (My Content) Manage saved and uploaded resources and folders To Access the Curriculum Manager Sign In or Join Now
    • Browse Resource Directory Browse educational resources by subject and topic
    • Curriculum Calendar Explore curriculum resources by date
    • Lesson Planning Articles Timely and inspiring teaching ideas that you can apply in your classroom
    • Our Story
    • Frequently Asked Questions
    • Testimonials
    • Contact Us
  • Pricing
  • School Access
    • Your school or district can sign up for Lesson Planet — with no cost to teachers
      Learn More
  • Sign In
  • Try It Free

Hi, what do you want to do?

Create a lesson plan
Create a lesson plan
Generate resources with 80+ AI teacher tools
Generate resources with 80+ AI teacher tools
Search 200,000 instructional videos
Search 200,000 instructional videos
Find a teaching resource
Find a teaching resource
Shape Up Lesson PlanShape Up Lesson Plan
Publisher
Curated OER
Curator Rating
Educator Rating
Not yet Rated
Lesson Plan

Shape Up

Curated and Reviewed by Lesson Planet
This Shape Up lesson plan also includes:
  • Project
  • Join to access all included materials

Students explore differents types of triangles and quadriaterals. For this polygon lesson, students  model identify and compare two and three dimensional geometric figures. Students create tangrams and discover the difference between different types of triangles and quadrilaterals. Students visit online sites to explore tangrams.

10 Views 31 Downloads
Concepts
polygons, 2-d shapes, 2-d, quadrilaterals, tangrams, triangles

Additional Tags

polygons, quadrilaterals, tangrams, triangles, math
Show More Show Less

Resource Details

Grade
6th - 8th
Subjects
Math
2 more...
Resource Type
Lesson Plans
Audience
For Teacher Use
Duration
3 days
Instructional Strategies
Skills Practice
1 more...
Usage Permissions
Fine Print

See similar resources:

Assessment

Isosceles Triangle Spaces

Concord Consortium
How many different types of triangles can your class name? A discovery lesson guides learners through an exploration of the different triangle types and the relationships between their angles and sides. Using coordinate geometry,...
7th - 10th Math
CCSS: Adaptable
Printables

Triangle Pack

K-5 Math Teaching Resources
With so many different types of triangles, it can be a challenge for young mathematicians to keep them all straight. Luckily this set of printable triangles is here to engage children in comparing and sorting triangles by their...
4th - 6th Math
CCSS: Adaptable
Lesson Plan

Classifying Triangles

National Security Agency
Building on young mathematicians' prior knowledge of three-sided shapes, this lesson series explores the defining characteristics of different types of triangles. Starting with a shared reading of the children's book The Greedy...
4th - 8th Math
CCSS: Adaptable
Worksheet

Triangles

Curated OER
Why are there so many different types of triangles? Be that as it may, beginning geometers need to understand the differences between equilateral, isosceles, scalene, and right triangles, and they get a visual approach with this...
4th - 7th Math
CCSS: Designed
Lesson Plan

SuperShapes, Part 1; "Tri"ing Triangles

Curated OER
An outstanding lesson on triangles awaits your math scholars. Learners focus on the triangle, which is the strongest of all polygons. They see the role that triangles play in the design of buildings, and learn about triangle...
5th - 6th Math
Instructional Video

Triangle Inequality Theorem: Lesson

CK-12 Foundation
Can any three lengths make a triangle? One of the videos in a playlist on basic geometry introduces the Triangle Inequality Theorem. Using three given lengths, the presentation illustrates the restrictions on lengths of any side of a...
5 mins 6th - 12th Math
CCSS: Adaptable
Lesson Plan

Triangle Area

Shodor Education Foundation
While the lesson focuses on right triangles, this activity offers a great way to practice the area of all triangles through an interactive webpage. The activity begins with the class taking a square paper and cutting in in half; can they...
6th - 9th Math
CCSS: Adaptable
Unit Plan

Cuemath: Triangles

Cuemath
Explore everything about triangles. Learn about the different types, important properties, and how to find its area and perimeter. Check out the solved examples and interactive questions for better understanding.
5th - 8th Math
CCSS: Adaptable
Lesson Plan

Classifying Triangles

Digging Into Math
Young mathematicians explore the world of three-sided shapes in this lesson on the different types of triangles. Starting with a general introduction to classification using Venn diagrams, children learn how to categorize triangles...
4th - 8th Math
CCSS: Adaptable
Handout

Science Struck: List of Different Types of Geometric Shapes

Science Struck
A comprehensive list of 2D shapes and 3D solids with everything from a triangle to a dodecahedron. Includes illustrations and short descriptions of attributes for each.
4th - 8th Math
CCSS: Adaptable
Try It Free
© 1999-2026 Learning Explorer, Inc.
Teacher Lesson Plans, Worksheets and Resources

Sign up for the Lesson Planet Monthly Newsletter

Open Educational Resources (OER)

  • Health
  • Language Arts
  • Languages
  • Math
  • Physical Education
  • Science
  • Social Studies
  • Special Education
  • Visual and Performing Arts
View All Lesson Plans

Discover Resources

  • Our Review Process
  • How it Works
  • How to Search
  • Create a Collection

Manage Curriculum

  • Edit a Collection
  • Assign to Students
  • Manage My Content
Contact Us Site Map Privacy Policy Terms of Use