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# Newweek2

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### Newweek2

1. 1. Welcome to Pre-Algebra Tuesday: Quarter 2 ..Week 2 1. Please have your homework and weekly assignment sheet from last week on your desk and write your homework in your agenda book for the week. 2. Discuss Application 1 3. Turn in weekly assignment sheet from last week 4. Investigation 2 • 2.1 Drawing Wumps 3. Tonight’s Assignment • Draw all 5: Mug, Zug, Lug, Bug and Thug
2. 2. Investigation 2 Similar Figures
3. 3. Scenario Zack and Marta wanted to design a computer game that involved several animated characters. Marta asked her uncle Carlos, a programmer for a video game company, about computer animation. Carlos explained that the computer screen can be thought of as a grid made up of thousands of tiny points called pixels. To animate figures, you need to enter the coordinates of key points on the figure. The computer uses these points to draw the figure in different positions.
4. 4. Marta told her uncle that sometimes the figures in their game would need to change size. Her uncle explained that a computer can make figures larger and smaller if you give it a rule for finding the key points in the new figure from key points in the original figure.
5. 5. 2.1 Drawing Wumps  Zack and Marta’s computer game involves a family called the Wumps. The members of the Wump family are various sizes, but they all have the same shape. Mug Wump is the game’s main character. By enlarging or reducing Mug, a player can transform him into other Wump family members.
6. 6. 2.1 Drawing Wumps Zack and Marta experimented on paper with enlarging and reducing figures on a coordinate grid. First, Zack drew Mug Wump on dot paper. Then, he labeled the key points from A to Z and from AA to FF and listed the coordinates for each point. Marta described the rules that would transform Mug into different sizes to create other members of the Wump family.
7. 7. 2.1 Instructions for Drawing Wumps  To draw Zug, Lug, Bug, and Thug, use the given rule to find the coordinates of each point. For example, the rule for finding the points for Zug is (2x, 2y). So multiply each of Mug’s coordinates by 2 to get the coordinates for Zug. Mug (x, y) (2, 0) (2, 4) (0, 4) Zug (2x, 2y) Lug (3x, y) Bug (3x, 3y) Thug (x, 3y)
8. 8. hart… te c mple Co
9. 9. 2.1 Instructions for Drawing Wumps Use Lab sheets 2.1A and 2.1B to draw the Wump family. Draw Mug Wump first by plotting the points of Set 1. Connect the points in each set in order as you plot them. Next plot and connect the points in Set 2, then Set 3. For Set 4, make a dot at each point- don’t connect them. Label your drawing Mug.
10. 10. How to plot points…
11. 11. Quarter 2:Week 2 Warm-up: Wednesday • Complete the table… Mug (x, y) (2, 4) (6, 12) (10, 14) Thug (2x, 3y) Lug 1 1 ( 2 x, 2 y )
12. 12. Welcome to Pre-Algebra! Wednesday . 1. Please have your homework( 5 drawings: Mug, Zug, Lug, Bug, and Thug) on your desk and get started on your warm up. 2. Discuss and look at 5 drawings 3. Please get out your journal – Problem 2.1 1. Class discussion on Problem 2.1 2. Homework – Follow up 2.1
13. 13. Problem 2.1 Lurking among the members of the Wump family are some imposters who, at first glance, look like the Wumps but are actually quite different. In your journal:  Describe Mug’s shape.  Compare the other four characters to Mug. Who are the imposters?  What things are the same about Mug and Zug? Mug and Lug? Mug and Bug? Mug and Thug? What things are different? Think about the general shape, the lengths of sides, and the angles of each figure.
14. 14. Follow up 2.1 1. In Mathematics, we say that figures like Mug and Zug (but not Mug and Lug) are similar. What do you think it means for two figures to be mathematically similar? 2. The members of the wump family are all similar. How do their corresponding sides compare? How do their corresponding angles compare?
15. 15. Quarter 2: Week 2 Warm-up Wednesday Use the rectangle to answer the questions. 1. Give the length and width of a rectangle that is an enlargement of the given rectangle. 2. Give the length and width of a rectangle that is not an enlargement of the given rectangle. 3. Write the formula for area of a rectangle. 3 4