Unit 2: Variables and Properties

How many variables are shown in this code?

• 1

• 2

• 3

• I'm not really sure

Tags

CCSS.6.EE.B.6

The first variable is a ​ (a)   and the second variable is a ​ (b)   .

• circle
• rectangle
• label

Tags

CCSS.6.EE.B.6

The variable called ball is a ​ (a)   and the variable called box is a ​ (b)   .

• circle
• rectangle
• label

Tags

CCSS.6.EE.B.6

When you run this code...

• a blue circle and a red rectangle will be drawn

• only a white circle and some text will be drawn

• nothing will happen unless you click the mouse

• nothing will happen

• I'm not really sure

Answer explanation

The ball and the box are drawn whether you click the mouse or not. If you don't want them to be drawn then you have to set their visible property to False.

Tags

CCSS.2.G.A.1

When this code runs...

• a blue circle will be drawn wherever the mouse is clicked

• a blue circle will be drawn at (300, 30)

• nothing will happen

• I'm not really sure

c = Circle(200, 300, 20)

c.centerX = 150

Where is the circle drawn?

• (200, 300)

• (150, 300)

• (200, 150)

• (150, 150)

• I'm not really sure

Tags

CCSS.HSG.CO.A.1

CCSS.HSG.GPE.A.1

If you click the mouse at (250, 320) on the canvas...

• a blue circle will be drawn at (300, 30)

• a blue circle will be drawn at (250, 320)

• nothing will happen

• I'm not really sure

Tags

CCSS.5.G.A.1

CCSS.5.G.A.2

When you click the mouse...

• a blue circle will be drawn wherever you clicked the mouse

• an error will occur

• nothing will happen

• I'm not really sure

Answer explanation

An error occurs because the onMousePress() parameters are x and y, but ball.centerX is being set to mouseX. mouseX is not defined for this function. Only x and y are.

Tags

CCSS.HSA.CED.A.2

When you click the mouse...

• a blue circle will be drawn wherever you clicked the mouse

• an error will occur

• I'm not really sure

Answer explanation

An error occurs because the code is setting ball.centerX = x, but x has not been defined in onMousePress().

Tags

CCSS.5.G.A.1

CCSS.5.G.A.2

When you click the mouse...

• only one red rectangle will be drawn and it's upper left corner will be where the mouse is

• an error will occur

• a red rectangle will be drawn at (250,100) and also wherever the mouse was clicked

• I'm really not sure

Answer explanation

When you use a variable like box, it will only be drawn one time. If you want more boxes, you either have to use other variables or just draw more rectangles that aren't variables.

Tags

CCSS.6.EE.B.6