Back to Lesson Library

Area of Triangles

Unknown Grade45 min

Learning Objective

I can find the area of a triangle when I know the base and height.

Lesson Flow

Watch Video

5 min

How to Find the Area of a Triangle | Calculate the Area of a Triangle

Unknown Channel

Practice

14 min

7 questions • Short answer

Exit Ticket

5 min

“A triangular garden has a base of 7 meters and a height of 4 meters. What is the area of the garden? A pennant in the shape of a triangle has a base of 12 centimeters and a height of 9 centimeters. What is the area of the pennant? ”

Teacher Guide

Get the complete package:

  • Answer keys for all questions
  • Differentiation strategies
  • Extension activities
  • Printable student handouts

New to Insta~Lesson?

We would love to help you present Insta~Lesson to your colleagues and administrators. Here are a few resources you can use:

About Insta~Lesson

A simple one-pager you can use to share Insta~Lesson.

How Insta~Lesson Helps Teachers Plan

Learn how Insta~Lesson makes life easier for teachers. This is a great resource to share at a staff meeting or PD!

How Insta~Lesson Supports Instruction Schoolwide

Learn more about Insta~Lesson's dedicated supports for partner schools.

Create Your Own Lesson