ALERT: JavaScript is required to dispay or create lessons properly on The Lesson Builder. JavaScript is currently disabled on your browser.What Is JavaScript? JavaScript is the computer language that web browsers like Internet Explorer, Mozilla Firefox, Google Chrome, and Safari use to make changes to webpages based on what you click on, as well as allowing fancy animations. Most websites use some amount of JavaScript to give you a better experience. The Lesson Builder uses JavaScript to display lessons in a format that allows you to easily customize them, to customize the structure of new lessons, to perform custom searches, to clean up lesson text, and to view reference material while creating a new lesson. New lessons cannot be created and existing lessons will only partially display if JavaScript is turned off. About 98% of web users have JavaScript enabled, and JavaScript is enabled on all current web browsers by default.How Can I Enable JavaScript? It varies from browser to browser. Look for an 'options', 'settings', or 'tools' selection on your browser, or perform a web search for how to do it for your specific browser.How Can I Know It's Fixed? When you think you have enabled JavaScript, refresh the page and this message should disappear. If you still see this message after refreshing the page, JavaScript is still disabled.

Area Introduction

Grade Level:: 3
Subject:: Math
Topic:: Area
Objective:: Objective: Understand area as an attribute of plane figures.
Other Information:: Click to enter. This field is good for key information that does not fit into one of the other sections.
Public Notes:: Click to enter. Public notes are visible to anyone who views your lesson.
Private Notes:: Click to enter. Private notes are visible only to you, when you are logged in.
Reflection:: Click to enter. Your reflection should be entered after you've delivered your lesson. Evaluating what worked well and what could be improved will further your professional development, and help any teachers looking to build off your lesson.
Prep:: n/a
Materials:: pattern blocks, problem set
Standards Met:

Log In

Create Account

Update Password

NOTE: You need to update your password before you can be logged in.

Include:

ALERT: First party cookies are required to sign in to The Lesson Builder. First party cookies are currently disabled on your browser.

How Can I Know It's Fixed? When you think you have enabled cookies for this site, refresh the page and this message should disappear. If you still see this message after refreshing the page, cookies are still disabled for this site.

Area Introduction