Code.org Unit 3 Lessons 10-13

If you scaled the elephant to 0.5, would the elephant be smaller or bigger than it is now?

• Smaller

• Bigger

This set of code is supposed to show green and yellow circles that appear randomly around the stage. We only see the green circles. Debug the code by choosing the correct set of code below.

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Which piece of code causes the Alien to move a little bit back and forth.

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This set of code causes the pencil and brush to move back and forth a little bit. Why did you have to change the numbers in the randomNumber block for the brush? (notice they are different than the pencil's randomNumber block)

• the numbers are different because the brush will appear bigger than the pencil

• they are different because the brush needs to be placed at a different spot on the x axis line

• the pencil will appear 2nd on the x axis

Matching: Choose the correct code that will cause the plane and jet to move in the correct direction on the coordinate plane.

• plane

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• background

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• jet

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Choose the correct code that will cause the mouse to move diagonally.

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Choose the code that will cause the motorcycle to move diagonally.

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Matching: Use the code to show which fish is the fastest to the slowest using the counting pattern code.

• 2nd fastest fish

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• slowest fish

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• fastest fish

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Watch the animation. Which set of code is going to cause the purple fish to become larger on the screen?

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Which line of code is most likely to return an error?

Mathematical Equivalence

ON