Students creating rubber band stretchers.

Students used rubber bands to make scaled sketches in the first investigation.

Here are some pictures of them working. 

Stretching and Shrinking Unit #3

Common Core Standards for this Unit:

• 7.RP.A.2 Recognize and represent proportional relationships between quantities.
• 7.RP.A.2a Decide whether two quantities are in a proportional relationship, e.g., by testing for equivalent ratios in a table or graphing on a coordinate plane and observing whether the graph is a straight line through the origin.
• 7.RP.A.2b Identify the constant of proportionality (unit rate) in tables, graphs, equations, diagrams, and verbal descriptions of proportional relationships.
• 7.RP.A.3 Use proportional relationships to solve multistep ratio and percent problems.

Goals for this Unit:

• Similar Figures Understand what it means for figures to be similar

- Identify similar figures by comparing corresponding sides and angles

- Use scale factors and ratios to describe relationships among the side lengths, perimeters, and areas of similar figures          

- Use algebraic rules to produce similar figures

- Recognize when a rule shrinks or enlarges a figure

• Reasoning With Similar Figures Develop strategies for using similar figures to solve problems

- Predict the ways that stretching or shrinking a figure will affect side lengths, angle measures, perimeters, and areas

- Use scale factors or ratios to find missing side lengths in a pair of similar figures

- Use similarity to solve real-world problems

Hour Of Code- Links to Coding

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Come attempt to learn coding and the basics behind Computer Science.

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Click here to access - Flappy Bird Coding

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Practice Assessment- Accentuate the Negative

Click here to access the practice test.

Answer key to Practice Test and Important Concepts Sheet
Click here to access

Also good to review is Looking Back p. 97-98 in the text 
# 1, 3, 5, 7 and 8.

Accentuate the Negative Review Guide

Click here to access the Review Guide.

Accentuate the Negative Inv 4.1 Worksheet
This is a very good probe to understand if students know the order or operations and algorithms of integers!
Click here to access.

Multiplication Algorithms

Inetger Product Game

Here is the link to the online integer product game.

Click here to acccess.