Extension Project for Stretching and Shrinking

When you complete your normal homework you can start the following project using the computer program Google Sketch-up.

You may have to install this from your Self Service.

Here is the introductory lesson

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Here is a more challenging lesson.  

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Investiagtion 2.1 Mug Wump!

Students are currently graphing Mug Wump and his impostors on coordinate graphs.  They are investigating how a "rule" will change the dimensions of an original shape.  Some rules will allow the shapes to be similar and some will not.  

Do you have any ideas which rules will change an image to be similar?

Use the following link to help you in plotting points on a coordinate graph.

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Hour of Code is Here!

Here is the link to get a USB Bracelet if you have completed the Hour of Code.

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Find the link here to the activities.

Hour of Code Links

Novice Lessons: I have never tried programming

Blockly: Code With Anna and Elsa

Blockly: Write Your First Program

Scratch: Animate Your Name, Create a Holiday Card and Create a Pong Game

Tynker: Build Your Own Game

MIT App Inventor: App Inventor Hour of Code (Android device needed)

Apprentice Lessons: I have tried some programming and want to learn more

Khan Academy: Introduction to Javascript

Code Avengers: Learn to make a Javascript Quiz game

Code Combat: Play as a Wizard using code (spells) to control your heroes, navigate mazes, defeat ogres, trick enemies, and rescue allies! Learn JavaScript in this HTML 5 web game for complete beginners.

RoboMind Academy: Program a Virtual Robot

Ninja Lessons: I have learned at least two programming languages and want to go deeper

Code Academy: Learn Javascript

CodeHS: Learn to Code with Karel the Dog

Processing: Drawing With Code

GrokLearning: Learn Python (3 activities to learn the Python programming language)

Make Games With Us: Build an iPhone Game in Your Browser

Touch Develop: Crazy drawings, flying monsters, swirling flowers… create your apps on your device with TouchDevelop, a friendly mobile app creation environment. Runs on iPhone, iPad, Android, Windows, Windows Phone, Linux, Mac.

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