Standard 4.MD.A.3

Apply the area and perimeter formulas for rectangles in real world and mathematical problems. For example, find the width of a rectangular room given the area of the flooring and the length, by viewing the area formula as a multiplication equation with an unknown factor.

Description

Link

Howard County

This website explains the standard, provides ways to increase rigor, and links to math tasks for this standard. Includes assessments.

https://hcpss.instructure.com/courses/107/pages/4-dot-md-dot-3-about-the-math-learning-targets-and-rigor

https://hcpss.instructure.com/courses/107/pages/4-dot-md-dot-3-assessment-tasks

Khan Academy

Find the missing side length of a rectangle when given its perimeter or area. Compare perimeters and areas of rectangles.

Find the area of rectangles and squares when given side lengths. Find the side length of a square when given the area.

https://www.khanacademy.org/math/basic-geo/basic-geo-area-perimeter/basic-geo-area-perimeter-polygon/e/area-and-perimeter-of-rectangles-word-problems

https://www.khanacademy.org/math/pre-algebra/measurement/area-basics/e/area_of_squares_and_rectangles

Learnzillion

In this lesson you will learn how to find the area of a rectangle by using area models.

In this lesson you will learn to find the area of a rectangle by using an algorithm.

https://learnzillion.com/lesson_plans/5664-use-area-models-to-find-the-area-of-rectangles#fndtn-lesson

https://learnzillion.com/lesson_plans/5404-find-the-area-of-a-rectangle-using-the-standard-formula#fndtn-lesson

*May require a free account.

K-5 Math Teaching Resources

All activities are suitable for use in Math Centers, small group or whole class settings and are designed to elicit a range of responses and provide opportunities for students to communicate their reasoning and mathematical thinking.

http://www.k-5mathteachingresources.com/support-files/fencing-a-garden.pdf

http://www.k-5mathteachingresources.com/support-files/designing-a-zoo-enclosure.pdf

VirtualNerd

Ever had someone come up to you on the street, hand you a shape, and ask you to find the perimeter of that shape? Watch this tutorial, and next time that happens you'll be ready!

http://www.virtualnerd.com/middle-math/geometry-measurement/shape-perimeter.php