← Years 5–6 Creating Digital Solutions

Event block: when green flag clicked

An event block that starts the script stacked under it. It is a hat block that sits at the top, and the program begins when you click the green flag.

Part of: 5-6 Digital Technologies Vic Curric - Creating Digital Solutions — Module 45

Understanding Event block: when green flag clicked in Years 5–6 Creating Digital Solutions

What it does: The event block is first, and the blocks stacked under it run after the green flag is clicked. It is a hat block, so it sits at the top. Its curved top shows that no block can go above it. Hat blocks are named for their shape. They go on top of a stack and start the script. It starts a program. A Looks block such as 'say' is what makes a sprite speak.

Common mistakes: The move block counts in steps, not degrees. Degrees belong to the turn block. The line should be 'move (10) steps'. This script should start when the green flag is clicked. 'when space key pressed' is a different event block, so clicking the green flag would not run the script. Line 1 should be 'when green flag clicked'.

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This module's key terms are also in a printable crossword (Modules 41–50) and word search (Modules 41–74).

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Each concept is reinforced from every angle — learned, then applied, then tested.

Learning

Duo

Which block is used to start a script when you click the green flag?

when green flag clickedforever

Matches

move 10 steps say Hello! when green flag clicked

↓

The event block is at the bottom. A hat block must be at the top of the script, or the blocks above it will not start when the flag is clicked.

Applying

Meanings

Term

when green flag clicked

Meaning

An event block that starts the script stacked under it. It is a hat block that sits at the top, and the program begins when you click the green flag.

Practice

when green flag clicked

Testing

Gaps

Check Answer

Spots

2say [Ready!] for 2 seconds

3move (10) degrees

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Quick Questions

1. Which block is used to start a script when you click the green flag?

A. forever

B. when green flag clicked ✓

The 'when green flag clicked' event block starts the script stacked under it. 'forever' is a loop, not a way to start a program.

2. Where does the 'when green flag clicked' block go in a script?

A. At the bottom of the stack

B. At the top of the stack ✓

It is a hat block, so it sits at the top. Its curved top shows that no block can go above it.

3. True or false: The blocks stacked under 'when green flag clicked' run when you click the green flag.

A. True ✓

B. False

Clicking the green flag fires the event, and the script stacked beneath the hat block starts running.

4. What happens to a stack of blocks that has NO event block at the top?

A. It does not start when the green flag is clicked ✓

B. It starts by itself when the green flag is clicked

Without an event block, nothing tells the script to begin. You need a hat block like 'when green flag clicked' at the top.

5. Why is 'when green flag clicked' called a hat block?

A. It has a rounded top and sits on top of a script like a hat ✓

B. It makes the sprite wear a hat

Hat blocks are named for their shape. They go on top of a stack and start the script.

Match the Pairs

when green flag clicked → An event block that starts the script stacked under it when the green flag is clicked

hat block → A block with a rounded top that sits at the very top of a script and starts it

To start a program when the green flag is clicked, put the event block at the top of the script, with the other blocks stacked underneath → when green flag clicked say Hello! for 2 seconds move 10 steps

Two separate scripts can both start at the same time when the green flag is clicked → when green flag clicked move 10 steps when green flag clicked say Hi!

move 10 steps say Hello! when green flag clicked → The event block is at the bottom. A hat block must be at the top of the script, or the blocks above it will not start when the flag is clicked.

when green flag clicked move 10 steps (separate stack) → The move block is not joined to the hat block. A block that is not stacked under the event block will not run when the green flag is clicked.

Key Term

when green flag clicked

An event block that starts the script stacked under it. It is a hat block that sits at the top, and the program begins when you click the green flag.

Fill in the Blanks

1. when green flag clicked say [Hello!] for (2) seconds

Hint: Type the event block that starts the script when the green flag is clicked.

2. when green flag clicked say [Let's start!] for (2) seconds

Hint: Type the two words for the thing you click to run the program.

3. when green flag clicked move (10) steps

Hint: Type the motion block that moves the sprite forward. It sits under the hat block.

4. when green flag clicked say [Go!] for (2) seconds turn (15) degrees

Hint: Type the motion block that rotates the sprite. It runs after the say block.

5. when green flag clicked think [Ready?] for (2) seconds

Hint: Type the looks block that shows a thought bubble when the program starts.

Spot the Error

Question 1

A when green flag clicked

B say [Ready!] for 2 seconds

C move (10) degrees

D turn right (15) degrees

Line C — The move block counts in steps, not degrees. Degrees belong to the turn block. The line should be 'move (10) steps'.

Question 2

A when space key pressed

B set [score v] to (0)

C say [Go!] for 2 seconds

Line A — This script should start when the green flag is clicked. 'when space key pressed' is a different event block, so clicking the green flag would not run the script. Line 1 should be 'when green flag clicked'.

Question 3

A when green flag clicked

B go to x: 0 y: 0

C say [Hi!] for 2 seconds

D when green flag clicked

Line D — A hat block such as 'when green flag clicked' must sit at the top of a script. It cannot go at the bottom. This line should be 'turn right (15) degrees'.

Question 4

A when green flag clicked

B say [Hello!] for 2 seconds

C move (10) steps

D say [Bye!] for seconds

Line D — The 'say for' block needs a number of seconds. The number is missing. It should be 'say [Bye!] for 2 seconds'.

Question 5

A when green flag clicked

B set [score v] to (0)

C change [score v] to (1)

D say (score) for 2 seconds

Line C — The 'change' block uses 'by' to add to a variable. 'to' belongs to the 'set' block. It should be 'change [score v] by (1)'.

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