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Distributing (Fun + Learning): The Distributive Property. By: Peggy Li Under the direction of Professor Susan Rodger Duke University, June 2011. Overview. This tutorial will help you make an Alice world that lets you practice the distributive property .

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distributing fun learning the distributive property

Distributing (Fun + Learning):The Distributive Property

By: Peggy Li

Under the direction of

Professor Susan Rodger

Duke University, June 2011

overview
Overview
  • This tutorial will help you make an Alice world that lets you practice the distributive property.
  • An expression in the form a(bx+c) will appear, where a, b, and c are nonzero integers.
  • A possible answer for the expanded form will also show up. The user clicks Y if he/she thinks it is right, and N if he/she thinks it is wrong.
  • Concept can be further developed to practice more advanced concepts like adding algebraic expressions or using fractions.
slide3

Creating a new world

  • Open Alice and create a new world.
  • Select a template of your choice. (This tutorial uses Grass, but any other works too.)
  • Click Open to start building your world.
  • Remember to save your world somewhere you can find it later!
slide4

Adding a person

  • Click the green Add Objects button.
  • In the Local Gallery, scroll to the right until you reach the People folder. Click on the folder.
  • Scroll to the right until the very end.
  • You can use hebuilder and shebuilder to create your own character.
slide5

Why hebuilder/shebuilder

Just a quick explanation!

  • You might have noticed there are lots of other cool people to choose from in the People folder!
  • We’re going to use the Character Builder because it comes with some built-in methods that will be helpful later on.
  • Once you’re comfortable working in Alice, you can use an existing character and create new methods for it.
slide6

Customizing your person

  • Customize your person! You can choose:
    • Body: head, torso, and legs
    • Face: skin tone, eyes, and lips
    • Hair: length/style and color
    • Clothing: shirt, pants, and shoes
  • Give your character a name and enter your name in the Created By box. Now click OK!

Note: The person in the tutorial is named Guide. This will come up in future slides.

slide7

Rotating the arms

  • Your person’s arms will be spread out like in the picture. Let’s move them back down to his/her side.
  • Find the Object Tree on the left.
  • Click the + next to your person’s name, then click the + next to upperBody and Chest.
  • You should now see parts called rightUpperArm and leftUpperArm.
slide8

Rotating the arms

  • Right-click on rightUpperArm in the Object Tree.
  • Now go to Methods, select roll, and right. Click on Other and type in 0.2.
  • Do the same for leftUpperArm, but this time roll it to the left, again by 0.2.
  • Your person’s arms should look like this:
slide9

Adding 3D text objects

  • Click on Add Objects again and return to the Local Gallery.
  • Scroll all the way to the right until you reach Create 3D Text, and click that.
  • Enter “a(bx+c)= ” for the text.
  • If you want, you can change the font.

The tutorial will use Arial bold.

  • Make another 3D Text that says “abx+ac”.
slide10

Renaming and turning 3D text

  • In the Object Tree, right-click on the first 3D Text you made and rename it “expression”.
  • Rename the second one “answer”.
  • Right-click on expression in the Object Tree. Go to Methods >> turn to face >> camera.
  • Repeat Step 3 for answer.
  • Both objects should now be facing you.
slide11

Repositioning objects

  • Locate the object control buttons. Use them to move and resize the objects until they look roughly like this: