Distributing (Fun + Learning): The Distributive Property

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# Distributing (Fun + Learning): The Distributive Property - PowerPoint PPT Presentation

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

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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.
• 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.

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!

• 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.

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.

• 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.

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.

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:

• 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”.

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.

Repositioning objects

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