University of Utah
University of Utah: Java Area Applet
Nice site explaining how to find the area under a curve by using a Java applet. The applet computes the area of a figure made of rectangles which approximates the region under the given curve.
Other
Nearpod: Area & Perimeter: Rectangle
In this lesson on area and perimeter, 3rd graders will learn how to find the area and perimeter of rectangles by applying formulas.
Ducksters
Ducksters: Kids Math: How to Find Surface Area
Learn how to find the surface area of various shapes square, rectangle, and triangle on this website.
National Council of Teachers of Mathematics
The Math Forum: Nctm: Lesson Plan: Area and Volume
This lesson plan helps students understand the difference between area and volume. CCSS.Math.Content.3.MD.C.7.a Find the area of a rectangle with whole-number side lengths by tiling it
Khan Academy
Khan Academy: Area and the Distributive Property
Use area models to represent the distributive property in finding area of rectangles. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
PBS
Pbs Learning Media: Math + Arts: Dance Space
In this lesson plan, students students explore locomotor and non-locomotor movement and calculate the area needed to perform the African-American dance Zudio.
Khan Academy
Khan Academy: Measure to Find Area
Practice measuring the side-lengths of a rectangle to find its area.
Khan Academy
Khan Academy: Measure to Find Area
Practice measuring the side-lengths of a rectangle to find its area. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
University of Notre Dame
University of Notre Dame: Approximating Area Under a Curve With Rectangles
PDF of examples for finding the area under a curve using rectangles.
National Council of Teachers of Mathematics
The Math Forum: Seventh Grade Math: Area and Perimeter
Learn how to enlarge drawings, figure out how much tile to buy to cover a specific floor, and learn about area and perimeter. These and other lesson plans are provided, including a fun interdisciplinary plan featuring dragons.
ClassFlow
Class Flow: Review of Area
[Free Registration/Login Required] This flipchart is a review of calculating the area of squares, rectangles, and triangles for fifth graders. It also includes problems that work backwards from the area to find missing dimensions. It...
Shodor Education Foundation
Shodor Interactivate: Perimeter Explorer
Use this applet to find the perimeter of a variety of shapes with the same or different areas.
Khan Academy
Khan Academy: Find Perimeter by Counting Unit Squares
Calculate the perimeter of a rectangle from its side lengths. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Cuemath
Cuemath: Quadrilaterals
Explore the world of quadrilaterals and their properties. Find answers to questions like what are quadrilaterals, how they are formed, easy ways to identify them, and commonly seen quadrilaterals around us.
Other
Algebra Lab: Areas and Perimeters of Triangles and Special Quadrilaterals
Learn how to find the areas and perimeters of triangles and special quadrilaterals.
Shodor Education Foundation
Shodor Interactivate: Factorize 2
The resource consists of student notes, instructor notes, and an interactive activity. The activity allows learners to find the factors of a given number and then draw the product as the area of a rectangle on a grid.
Alabama Learning Exchange
Alex: Pump Up the Volume
In this lesson, students will be required to generate a formula for volume of a rectangular prism. Students working in cooperative groups will use prior knowledge for finding area of a rectangle to determine the "amount of area in a...
Shodor Education Foundation
Shodor Interactivate: Factorize
This Shodor site gives a brief explanation of factorization, and it allows you "to find all of the factorizations of a given number and then draw the product as the area of a rectangle on a grid."
National Council of Teachers of Mathematics
Nctm: Figure This: Patios
Does bigger perimeter mean bigger area? Answer this question when you try this math challenge from the NCTM Math Challenges for Families series. Discover how understanding area and perimeter can be useful in real world situations.