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Proportions, Scales and Ratios

Submitted by: Mary Jane Boswell
From: SLC, Utah
Date Submitted: December 6, 2001

While studying a unit on proportions, scales, and ratios, lead into a discussion about such careers as architects, builders, etc. Any career that uses scale drawings of their work would be appropriate.

As an assessment for the unit, have students create a scale drawing of a flag. Divide students into groups of five. Give each group an 8 1/2 x 11 copy of a flag that is already divided into 40 squares. Students must then recreate the flag on a poster board. They must figure out the scale and proportion of increase. Use paints to color the flags.

Also ask each student to write a paragraph about how they participated and how they felt the project went. Have groups also come up with the grading rubric.

This activity could be done with any picture. A fun idea would be to have them also increase its size larger and mark it out on the playground with sidewalk chalk.


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