This document summarizes activities from Day 2 of a Scratch programming camp. It includes instructions for scripts involving sprites gliding and counting, bouncing basketballs between sprites, creating geometric patterns using pen blocks, and a maze game with a color sprite navigated using arrow keys. Modifications are suggested such as adding sounds, varying colors, and timing maze completion.

1. MAGIC CAMP/Summer 2018/DAY 2 (Credit for Richard Wiktorowicz)
Programming with
Scratch
Scratch Activities
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All the broadcast blocks can be found in the Events.
Broadcast ()
This block makes the specified broadcast and has no further effect.
Broadcast () and Wait
This block makes the specified broadcast and freezes its script until all of the receiving scripts have finished.
When I receive()
This block will stay inactive until it receives the specified broadcast. Once it has been received, the script goes into
action and ends once it has finished, but it can be started more than once.
Broadcast Block

3. Scratch Activity #1 – Gliding Counting
Ghosts and a Small Dragon
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1- This script involves 4 Sprites
2- They take turns gliding towards the centre of the screen
3- This is how they do it.

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4. Modify the script so that each Sprite counts by 1 and says the new
counter i.e. 1, 2, 3, 4 then 5, 6, 7, 8 and so on. Each Sprite plays a
different sound after saying the number.
5. Modify the script so that each Sprite hides after doing its stuff and
shows itself for the next round.
6. Change the script to 6 Sprites counting, making sounds and
disappearing.
Scratch Activity #1 – Gliding Counting
Ghosts and a Small Dragon

5. Scratch Activity #2 – Bouncing Basketballs
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1 - This script involves 2 Sprites
2 - The ball flies from Sprite1 and stops when it gets to the edge of the screen.
3 - This is how you do it.

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4 - Modify the script so that Sprite2 makes a sound as it travels across the screen
5 - Modify the script so that ball bounces off Sprite3 back to Sprite1 and plays a different
sound when returning to Sprite1.
Scratch Activity #2 – Bouncing Basketballs

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6 - Modify the script so that Sprite4 is in between and the ball travels from Sprite1
to Sprite4 to Sprite3 and so on, in a loop. Use three different sounds.
Scratch Activity #2 – Bouncing Basketballs

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Scratch Activity #2 – Bouncing Basketballs
7 - Now add another Sprite (Sprite5) and the ball sequence is Sprite1, Sprite4,
Sprite3, Sprite5 and back to Sprite1. Put it in a loop.

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Pen Block
✓ Pen Down — Puts the sprite's pen up.
Pen blocks are the blocks that control the pen.
› There are 11 Pen blocks in Scratch2.0.
› Ex:-
✓ Clear — Removes all pen marks put on the screen.
✓ Pen Up — Puts the sprite's pen up.

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Pen Block
Pen blocks are the blocks that control the pen.
› There are 11 Pen blocks in Scratch2.0.
› Ex:-
✓ Change Pen Color— In projects that use the pen, the pen must have a certain color (no
transparency allowed) — this block can change it.
Some common uses for the Change Pen Color by () block are:
• Iterating through pen color values while the sprite is moved to create colorful art

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Pen Block
• Varying pen colors for an art program

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Scratch Activity #3 – Geometrical Patterns
1 - This script involves 1 Sprite with a black background.
2 - Let’s make it more colorful by adding

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Scratch Activity #3 – Geometrical Patterns
3 - Change the turn angle . Run the script.
4 - Change the turn angle. . Run the script.
5 - Change the turn angle. . Run the script.
6 - Change the turn angle. . Run the script.
7 -Change the turn angle . Run the script.

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8 - Into the last script let’s add a. so the script looks like this
Scratch Activity #3 – Geometrical Patterns

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Scratch Activity #4 – Maze Game
1 - This Maze Sprite is located in the Student Files/IST Folder. Import it and change
it to your choice of color.
2 - Import the color Sprite from the Student Files/IST Folder and change it to your
favorite color.

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3 - Here is a script that allows you to control the color of Sprite.

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Scratch Activity #4 – Maze Game
4 - When you place the color Sprite on your screen, look at the top of the
screen,which will give you the x and y coordinates of the Sprite at the
beginning of the script. Set your script to this value.
5 - The problem at the moment is that you can walk through walls. You need to
stop when the Maze Sprite and the Dot Sprite touch.
6 - In the script below, the game will end when you touch an edge. This means
it will also be a game of skill to avoid touching the edges. Modify the script as
shown below.

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9 - Add sounds when it hits the maze and when it finishes.
10 - Add a timer and show the time it took to complete the maze once it is
successfully completed. Use at beginning and at
finishing step.
11- Create you own maze for your friends to try.