Exploring the Area of Rectilinear Figures

The video tutorial teaches third graders how to find the area of rectilinear figures by decomposing them into smaller rectangles. The process involves dividing the shape into rectangles, calculating the area of each, and summing them up. Several examples are provided with measurements in different units, such as centimeters, inches, millimeters, yards, and feet. The tutorial concludes with instructions for completing an assignment and additional practice opportunities.

If one rectangle is 4 cm by 2 cm, what is its area?

• 12 cm squared

• 10 cm squared

• 8 cm squared

• 6 cm squared

Tags

CCSS.3.MD.C.7B

CCSS.4.MD.A.3

What property allows us to multiply the sides in any order when calculating area?

• Distributive property

• Additive property

• Associative property

• Commutative property

Tags

CCSS.3.MD.C.7B

CCSS.4.MD.A.3

How do you find the total area of a figure divided into two rectangles?

• Subtract the areas of the rectangles

• Multiply the areas of the rectangles

• Divide the areas of the rectangles

• Add the areas of the rectangles

Tags

CCSS.3.MD.C.7D

What is the first step in finding the area of a rectilinear figure?

• Multiply the length by the width

• Label the units of measurement

• Divide the figure into smaller rectangles

• Add the areas of smaller shapes

What unit is used if the measurements above a picture are in inches?

• Inches

• Millimeters squared

• Inches squared

• Centimeters squared

Tags

CCSS.3.MD.C.6

What is the area of a rectangle with sides 3 mm by 8 mm?

• 11 mm squared

• 24 mm squared

• 26 mm squared

• 25 mm squared

Tags

CCSS.3.MD.C.7B

CCSS.4.MD.A.3

If a rectilinear figure is divided into two rectangles with areas 12 yards squared and 30 yards squared, what is the total area?

• 42 yards squared

• 48 yards squared

• 40 yards squared

• 44 yards squared

Tags

CCSS.3.MD.C.7D

What is the area of a rectangle that measures 5 feet by 7 feet?

• 32 feet squared

• 37 feet squared

• 30 feet squared

• 35 feet squared

Tags

CCSS.3.MD.C.7B

CCSS.4.MD.A.3

Where should students go to complete their assignment after watching the video?

• Microsoft Teams

• Google Classroom

• Email to the teacher

• School website

What additional practice can students do if they have extra time?

• IXL skills

• Khan Academy

• Quizlet sets

• Reading textbooks