Scratch in 9th grade with many programming and algorithm worksheets. Students can practice online by manipulating the different blocks of the scratch software but also by performing loops, creating variables. These exercises can be treated at ninth level in junior high school.

Exercise 1

Associate each program with the corresponding output.

Exercise 2

This code appears on the arrow .

What does this sprite do when the program is executed?

Exercise 3

What does this program do?

Exercise 4

We ran this program and entered the number 45.

What is the content of my list at the end of the execution?

Exercise 5

How to complete this program in order to add the entered number to the list only

in case the number is not yet included?

Exercise 6

What code should be added to the two sprites so that the Bear1 sprite says hello to the cat

once the latter is near him?

Exercise 7

We click on the chat.

After exactly how many seconds will the cat say hello?

Exercise 8

The scene features a Ball goblin.

Is it possible to win in this game? Why is this?

Exercise 9

What does this program do?

We entered 12 and then 15. The cat announces NAN! Why?

How can the program be improved?

Exercise 10

What happens if you click on the balloon once?

What happens if you click on the balloon several times quickly?

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