Starter quiz
- In ScratchJr, what is the still picture on the stage called?
- background ✓
- behind
- backstreet
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- What is the green flag used for?
- to choose a colour
- to start a program ✓
- to change the sprite
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- What is an algorithm?
- a blocks palette
- a set of instructions for a program ✓
- a sprite
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- What does a program need to have at the end?
- a sprite
- an algorithm
- an end block ✓
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Exit quiz
- What is a value?
- a number on a command block ✓
- a number on a sprite
- a sprite
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- Where do you drag blocks to delete them?
- into the stage
- into the blocks palette ✓
- into the programming area
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- What happens when you change a value on a movement block?
- It changes what a sprite does. ✓
- It changes a sprite's colour.
- It changes the background.
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- What is one way to make a program shorter?
- use fewer backgrounds
- delete blocks that are not needed ✓
- take out the sprite
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Worksheet
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Presentation
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Video
Lesson Details
Key learning points
- Some command blocks can have number values on them.
- Values can be changed, causing different effects.
- Programs can be made shorter by deleting blocks and changing values.
Common misconception
The value is always how many times the command should run.
Different values cause different effects depending on the underlying command. These might not always be numerical values either.
Keywords
Delete - to remove something on a screen
Value - a number that can be changed
Effect - the result of changing something
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