Unit 2: Mouse events

What does the x and the y in the lower right hand corner (below the canvas) tell you?

• They don't tell me anything

• mouse x and y coordinates

• width and height of the canvas

• width and height of the vase

• I'm not really sure

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CCSS.5.G.A.1

CCSS.5.G.A.2

Where must you click to turn on the grid with x and y coordinates?

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CCSS.5.G.A.1

CCSS.5.G.A.2

If the mouse position is x > 200, then the mouse is on the _____ side of the canvas.

• top

• bottom

• left

• right

• I'm not really sure

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CCSS.5.G.A.1

CCSS.5.G.A.2

If the mouse position is y < 200, then the mouse is on or at the _____ of part the canvas.

• top

• bottom

• left

• right

• I'm not really sure

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CCSS.5.G.A.1

CCSS.5.G.A.2

If you move the mouse to (100, 200) on the canvas and then click...

• Nothing will happen

• An error will occur

• A circle will be drawn with a radius of 20

• An Oval will be drawn at (100, 200)

• I'm not really sure

Answer explanation

Clicking the mouse has no effect on the position of any Oval() in the code. However, the code does draw a red circle wherever you click the mouse.

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CCSS.5.G.A.1

CCSS.5.G.A.2

If you move the mouse to (100, 200) on the canvas and then click, a circle will be drawn with a...

• centerX of 100

• centerY of 100

• I'm not really sure

Answer explanation

Clicking the mouse has no effect on the position of any Oval() in the code. However, the code does draw a red circle wherever you click the mouse.

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CCSS.5.G.A.1

CCSS.5.G.A.2

If you move the mouse to (100, 200) on the canvas and then click, a circle will be drawn with a...

• centerX of 200

• centerY of 200

• I'm not really sure

Answer explanation

Clicking the mouse has no effect on the position of any Oval() in the code. However, the code does draw a red circle wherever you click the mouse.

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CCSS.5.G.A.1

CCSS.5.G.A.2

If you move the mouse up and down, then the...

• mouseX changes

• mouseY changes

• I'm not really sure

Answer explanation

Just like in algebra class, moving up and down on the coordinate plane puts you at different places on the y axis.

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CCSS.5.G.A.1

CCSS.5.G.A.2

If you move the mouse right and left, then the...

• mouseX changes

• mouseY changes

• I'm not really sure

Answer explanation

Just like in algebra, moving right and left in the coordinate plane changes the x position.

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CCSS.5.G.A.1

CCSS.5.G.A.2

If you move the mouse right and left, then the ___ of the circle changes.

• centerX

• centerY

• I'm not really sure

Answer explanation

Remember that the Circle() command requires that you specify the centerX and centerY as the first two arguments, like so: Circle(300, 200, 10) creates a circle at (300, 200). The 300 is the x position and the 200 is the y position. Moving the mouse right and left changes the mouseX, so that will change the centerX of the circle in this code.

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CCSS.5.G.A.1

CCSS.5.G.A.2