Determining area
Lesson
Grade 3
Created for Gynzy by: Mary Wolter
General
Students will learn the meaning of area. They will count squares to find an area. They will also multiply length times width to determine area.
Standards
CCSS.Math.Content.3.MD.C.7
Learning objective
Students will be able to determine the area of a square or rectangle.
Introduction
Students are shown various pictures of items that cover an area such as a rug or tiled wall. They discuss how these things cover a large space, or area.
Instruction
Students learn the meaning of area as the size a surface takes up. They learn that you can find the area by counting squares. Students practice counting area this way with several shapes. Students learn that area is always measured in squares and are shown the various units that are used to measure area such as inches, feet, centimeters, or meters. Next, students are shown the length and width of the shape. They learn that you can find area faster by multiplying these two measurements. Several opportunities to practice using multiplying length times width are provided. Students also solve story problems requiring them to determine area.
Quiz
Students respond to ten multiple-choice and true/false questions.
Closing
Students will choose a book from their desks or around the room. They will measure to find the length and width. They will use these measurements to find the area of the book.
Instruction materials
- ruler with inches and centimeters
- book
- book