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Biblioteka

Snap 2.1 using the pen

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Posljednje ažuriranje almost 6 years ago
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Pen experiment #2

Try the experiment below.

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Pen experiment #3

Pen experiment #4

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What draws a line?

Experiment to see when the sprite will draw lines.

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Getting started

Open Snap and save a new project as 2.1 using the pen.

In each section below, complete the steps shown in the images and answer the questions that follow.

Pen experiment #1

Experiment with drawing with the pen as shown in the steps below.

📼 Here is an ANIMATION of the process.

Pitanje 1
1.

What does the script do?

Clearing the screen

Build a script that you can use to clear the screen with the click of a key.

📼 Here is an ANIMATION of this process.

Pitanje 2
2.

Why is it important to put the GO TO block first, before the CLEAR block?

Pitanje 3
3.

What does "hue" mean?

Pitanje 4
4.

Which block is the most efficient to change / reset the pen size back to 1?

Pitanje 5
5.

What is the difference between SET blocks and CHANGE blocks?

For some reason, these blocks are tiny. Click on a block to zoom in.

Stavka koja se može prevućiarrow_right_altOdgovarajuća stavka

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makes the pen size grow by 1 each time it is clicked

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makes the pen size equal to 1 no matter how many times it is clicked

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makes the pen a certain color (a sort of orange)

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changes the pen color each time it is clicked

Pitanje 6
6.

If the pen is down, when will the sprite draw a line? Choose all correct answers.

Adding comments

📼 Here is an ANIMATION of this process.

Pen experiment #5

Experiment a bit more with drawing. Clear the screen as necessary.

📼 This ANIMATION covers parts b-d below, and this ANIMATION covers part f.

Your own creation (turn in image in Canvas)

Now use what you know about the pen to make a cool design of your own.

Follow the steps below to save a picture of the stage, then turn in the image in Canvas.