ALEX | Alabama Learning Exchange

Area Basics: Comparing Areas of Plots of Land

Classroom Resource Information

Title:

Area Basics: Comparing Areas of Plots of Land

URL:

https://aptv.pbslearningmedia.org/resource/arvnbba_ogi/comparing-areas-of-plots-of-land-khan-arvnbba_ogi/

Content Source:

PBS

Type:

Learning Activity

Overview:

Students will solve a word problem by finding the area of two rectangles. After finding the area of each rectangle, students must justify which rectangle is larger in terms of area. This resource provides videos and practice problems.

Content Standard(s):

Mathematics
MA2019 (2019)
Grade: 3

20. Find the area of a rectangle with whole number side lengths by tiling without gaps or overlays and counting unit squares.

Unpacked Content

Evidence Of Student Attainment:

Students:

Use manipulatives to tile a rectangle with unit squares to find the area.
Given a rectangle drawn on a coordinate grid, determine the area of the rectangle.
Given a rectangle tiled with unit squares, determine the area of the rectangle.

Teacher Vocabulary:

Area
Rectangle
Tiling
Gap
Overlay
Unit square

Knowledge:

Students know:

area is a measurable attribute of two-dimensional figures.

Skills:

Students are able to:

Find the area of a rectangle by tiling it without gaps or overlaps.
Measure the area of a rectangle by counting the number of unit squares needed to cover the shape.

Understanding:

Students understand that:

Area is the number of unit squares needed to cover a surface.
Multiple unit squares can be combined to measure the area of rectangles so long as the unit squares completely cover the figure without overlapping each other or extending beyond the edge of the figure.

Diverse Learning Needs:

Essential Skills:

Learning Objectives:
M.3.20.1: Define length.
M.3.20.2: Recognize that units of measure must be equal.
M.3.20.3: Express the length of an object as a whole number of length units by laying multiple copies of a shorter object (the length unit) end to end.
M.3.20.4: Recognize that the length measurement of an object is the number of same-size length units that span it with no gaps or overlaps.

Prior Knowledge Skills:

Identify units of measurement for length.
Examples: inches, feet, yard; centimeter, meters.
Demonstrate how to use measurement tools.
Example: avoiding gaps and overlaps.
Identify units of measure on measurement tools.
Use vocabulary related to comparison of length.
Examples: longer, shorter, longest, shortest, taller.

Alabama Alternate Achievement Standards

AAS Standard:
M.AAS.3.20 Find the area of a given shape using arrays (unit cubes and tiles) in relationship to multiplication. Limit units to 25.

Tags:

area, measurement, multiplication, plane figures

License Type:

Custom Permission Type
See Terms: https://www.pbslearningmedia.org/help/terms-of-use/#restrictions
For full descriptions of license types and a guide to usage, visit :
https://creativecommons.org/licenses

Partnered Event:

ALEX Resource Development Summit

Accessibility

Comments

2019 ALCOS

20. Find the area of a rectangle with whole number side lengths by tiling without gaps or overlays and counting unit squares.

This resource provided by:

Author:	Michelle Frye
The event this resource created for:	ALEX Resource Development Summit

ALEX Classroom Resource

Area Basics: Comparing Areas of Plots of Land