University of Colorado
University of Colorado: Ph Et Interactive Simulations: Area Builder
Create shapes using colorful blocks, and explore the relationship between perimeter and area. CCSS.Math.Content.3.MD.C.7.a Find the area of a rectangle with whole-number side lengths by tiling it
National Institute of Educational Technologies and Teacher Training (Spain)
Ministerio De Educacion: Veintiocho Cerillas
Remove four matches to the center of the square then repositions the other matches in such a way that the sum of them on each side is 11.
![Top Science: Go Figure! [Pdf] Activity](https://d15y2dacu3jp90.cloudfront.net/images/attachment_defaults/resource/large/FPO-knovation.png "Top Science: Go Figure! [Pdf] Activity")
TOPS Learning Systems
Top Science: Go Figure! [Pdf]
This is a classic area puzzle where polygon shapes are rearranged, giving what seems to be a different total area. Students must try to determine why there is a discrepancy.
Khan Academy
Khan Academy: Identify Unit Fractions
Identify unit fractions when given a visual or a context. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video tutorial, receive hints. CCSS.Math.Content.3.G.A.2 Partition shapes into...
Khan Academy
Khan Academy: Cutting Shapes Into Equal Parts
In this exercise, students practice cutting shapes into equal parts. Students receive immediate feedback and have the opportunity to get hints and try questions repeatedly. CCSS.Math.Content.3.G.A.2 Partition shapes into parts with equal...
Khan Academy
Khan Academy: Cut Shapes Into Equal Parts
Practice telling if a shape has been divided into equal parts. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
CK-12 Foundation
Ck 12: Elem Math: Areas of Rectangular Composite Figures Overlap 2
[Free Registration/Login may be required to access all resource tools.] A video and practice questions where students are presented with a rectangle that has shaded areas. They must calculate the area of the unshaded region. [1:48]
Illustrative Mathematics
Illustrative Mathematics: 3.md, 3.g, 3.nf Halves, Thirds, and Sixths
The purpose of this task is for students to use their understanding of area as the number of square units that covers a region, to recognize different ways of representing fractions with area, and to understand why fractions are...
Illustrative Mathematics
Illustrative Mathematics: 3.g Geometric Pictures of One Half
This task presents students with some creative geometric ways to represent the fraction one half. Aligns with 3.G.A.2.
Illustrative Mathematics
Illustrative Mathematics: 3.g Representing Half of a Circle
This task asks which pictures represent half of a circle? Moving into more complex shapes where geometric arguments about cutting or work using simple equivalences of fractions is required to analyze the picture. Aligns with 3.G.A.2.
Illustrative Mathematics
Illustrative Mathematics: 3.md Three Hidden Rectangles
The purpose of this task is for students to decompose a figure into rectangles and then find the total area by adding the area of all of its smaller, non-overlapping rectangles. Aligns with 3.MD.C.7.d.
ArtsNow
Arts Now Learning: Self Portrait Drawing [Pdf]
In this lesson, students will explore self-portraiture by looking at classical portrait paintings, such as Diego Velazquez's La Infanta Margarita or Raphael's Portrait of Baldassare Castiglione. A close look at these works reveals...
Better Lesson
Better Lesson: Partitioning Rectangles and Squares
This site provides six practice activities to learn how to partition a rectangle into rows and columns of same-size squares and count to find the total number of them.
Khan Academy
Khan Academy: Find Area With Partial Unit Squares
Count unit squares and partial unit squares to find the area of shapes. Students receive immediate feedback and have the opportunity to try questions repeatedly or receive step-by-step hints.
CK-12 Foundation
Ck 12: Elem Math: Partitioning Composite Figures Into Rectangles to Find Area 1
[Free Registration/Login may be required to access all resource tools.] In this learning module, students are asked to partition a shape into rectangles and add their areas together to get the area of the whole figure. Includes video...
CK-12 Foundation
Ck 12: Elem Math: Fraction of a Whole
[Free Registration/Login may be required to access all resource tools.] Students watch a video and attempt practice problems on determining what part of a whole has been shaded.
CK-12 Foundation
Ck 12: Elem Math: Areas of Rectangular Composite Figures Overlap 1
[Free Registration/Login may be required to access all resource tools.] A video and practice questions where students are presented with one or more smaller rectangles within a larger one. They must calculate the area of the larger...
Better Lesson
Better Lesson: Units & Wholes (Days 1 3)
It is important for students to learn to compare the size of the same fraction units as the size of the whole amount changes.
Better Lesson
Better Lesson: Filling in the Middle
Students use both area and perimeter to work with geometric shapes.
Better Lesson
Better Lesson: Area in Real Life With Irregular Polygons
Dividing an irregular shape into rectangles helps students find the area of an irregular shape.
Better Lesson
Better Lesson: Area of Irregular Polygon
Third graders look for break apart irregular polygons to make arrays to find the area of these common shapes.
Better Lesson
Better Lesson: Area & the Distributive Property
Third graders develop spatial reasoning about large areas through composing and decomposing rectangles to determine area.
Better Lesson
Better Lesson: Area of a Room: Basic Practice
Creating rooms with different dimensions but the same area improves understanding of multiplicative principles.
Thinkport Education
Math by Design: Area of a Composite Figure [Pdf]
Identify and calculate the area of a composite figure.