Third graders determine the perimeter of a shaded section by counting the number of unit squares that surround it. Each section is shaded on a small square unit grid. 

Concepts

perimeter, square units

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Additional Tags

math

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Instructional Ideas

• Use as a quick check, extra practice, quiz, or homework
• Have your students trace and count the outside units of the figures, one by one, to help determine the perimeter

Classroom Considerations

• This is a great way to introduce perimeter by counting square units that touch the sides of a figure
• Print all 10 versions of the worksheet or select the version you like and print by page
• There are eight problems for solving on each worksheet

Pros

• All 10 versions of the worksheet include answer keys

Cons

• None

Common Core

3.MD.C.6 MP5 MP6