# Intervention Resources to Support 7th Graders with Scale Drawings

I selected these resources to support 7th graders working on Open Resource’s Unit 1: Scale Drawings from Illustrative Mathematics. It’s been hard to find good resources to support the work with maps and scale drawings. Suggestions welcome! Just leave a comment.

Background Knowledge: Unit Conversions

Leveled Practice: Conversions within the Metric Systems

(Source Bossmaths)

Cut these pages into half sheets. Give each pair/group one level at a time to work on. Support kids with an anchor chat with metric system basics.

Fraction Multiplication Practice

Lot’s of practice for building fluency.

Problem Strings for Multiplying Fractions by Whole Numbers

Great Warm Ups! Follow the Number Talk routine!

String 16 1 /2 × 16, 1 /4 × 16, 3 /4 × 16, 1 /8 × 16, 2 /8 × 16, 3 /8 × 16, and so on

String 17 1 /2 × 20, 1 /4 × 20, 3 /4 × 20, 1 /5 × 20, 2 /5 × 20, and so on

String 18 1 /2 × 36, 1 /4 × 36, 1 /8 × 36, 3 /4 × 36, and so on

String 19 Multiplying a whole number by a fraction is the same as dividing that whole number by the reciprocal of the fraction, e.g., 1 /2 × 48 is the same as 48 ÷ 2; 1 /3 × 48 is the same as 48 ÷ 3.

Source: Bridges

Practice with Scaled Copies (7.G.1)

Desmos Scaling Machines

Introductory level practice/experience with describing scaled copies.

Open Middle: Similar Shapes

Using the digits 0-9, at most one time each, fill in the boxes so that one rectangle is a scaled copy of the other.

Practice Drawing Scale Copies

Practice drawing copies using a scale factor of 3 and 1/2,. Explore the impact on perimeter and area.

Puzzle: Cut into Scaled Copies

Kids have to figure out how to cut each shape to create figures that are scaled copies of each other. The red lines here, show a solution to the first puzzle:

Graphic Organizer

An opportunity for kids to synthesize by creating notes for themselves explaining the connection between the scale factor and the size of the scale copy.

Scaled Drawings (7.G.1)

Europe Trip

Kids use a map of Europe to create a trip that passes through a city that begins with every letter of the alphabet. They compete to see which group can find the shortest trip.They use the scale on the map  to calculate the actual distance they are traveling.

(Could easily be modified to focus on other areas of the world! Just need a map with a scale!)