Lesson 2. Algorithms and Programing (P1)_Scratch

In the stack of blocks below, how many times does the sprite move 10 steps?

• A. 6

• B. 7

• C.8

• 9

• None of the above

Given the following scene. What’s the expected result of variable “x”?

• A. 2

• B. 4

• C. 6

• D. 8

• E. None of the above

Michelle wants the cat to start in the middle of the stage, then move across the stage and

grow. It works the first time she clicks the green flag - but not when she clicks it again!

What's going on?

• A. Increase repeat 3 to repeat 5 or 10.

• B. Glide to ... should be replaced Go to.

• C. Change size by ... to Change size 20.

• D. Script blocks after When ... should be put in a “Forever” loop.

• E. None of the above.

Given the following scene. How long would the sprite Bat gradually glide from (0, 0) to

(-50, 100)?

• A. 1 second

• B. 10 seconds

• C. 2 seconds

• D. 20 seconds

• E. None of the above

Assume the green flag is clicked, with the script below, what is the picture on the stage?

• A. Square

• B. Circle

• C. Rectangle

• D. Rhombus

• E. Parallelogram

What is the expected picture on the stage?

• A. Square

• B. Pentagon

• C. Hexagon

• D. Circle

• E. Star

What would this script do?

• A. Make a sprite dance.

• B. Make a sound play.

• C. Make a costume.

• D. Rotate sprite.

• E. None of the above.

Given the following scene. What is the ball position after clicking the green flag?

• A. The ball would move forever 10 steps and jump.

• B. The ball would move forever 10 steps and go down.

• C. The ball would move if on edge, bounce.

• D. The ball would move forever 10 steps and return.

• E. None of the above.

Compares two following solutions. Who is/are correct?

• A. Student A is correct; Student B is incorrect.

• B. Student A is incorrect; Student B is correct.

• C. Both are not correct.

• D. Both are correct.

• E. None of the above.

Given the following script and scene. When up arrow key is pressed, the sprite Pencil

would move up. When down arrow key is pressed, the sprite Pencil would move down.

(Assume the green flag is clicked). Why doesn’t it work?

• A. A. “Change X” should be replaced by “Change Y”.

• B. Change X by 10 is too small.

• C. Change X by -10 is too small.

• D. Up arrow/Down arrow should be pressed.

• E. None of the above.