← Years 5–6 Creating Digital Solutions

The if block

A block that runs the blocks inside it only when its condition is true. If the condition is false, it skips them. The condition goes in the hexagon slot.

Part of: 5-6 Digital Technologies Vic Curric - Creating Digital Solutions — Module 55

Understanding The if block in Years 5–6 Creating Digital Solutions

What it does: The condition 'key space pressed?' is placed in the hexagon slot next to the word if. The say block is inside the if block, so the sprite only says Great! when the answer is yes. 3 is not greater than 5, so the condition is false and the say block inside is skipped.

Common mistakes: The slot needs a true or false condition. Score + 10 makes a number, not true or false. It should be if <score > 10> then. The condition goes in the hexagon slot straight after if, and then comes after it. It should be if <touching [Ball]?> then.

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This module's key terms are also in a printable crossword (Modules 51–60) and word search (Modules 41–74).

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Learning

Duo

What does the if block do?

It runs the blocks inside it only when its condition is trueIt runs the blocks inside it every time, no matter what

Matches

if <say Hello> then

↓

A say block was put in the condition slot. The slot needs a true or false question, like <answer = yes>. The say block should go inside the if block.

Applying

Meanings

Term

if <condition> then

Meaning

A block that runs the blocks inside it only when its condition is true. If the condition is false, it skips them. The condition goes in the hexagon slot.

Practice

when green flag clicked

Testing

Gaps

<score > 10> then

Check Answer

Spots

1if <score + 10> then

2 say [You win!]

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Quick Questions

1. What does the if block do?

A. It runs the blocks inside it only when its condition is true ✓

B. It runs the blocks inside it every time, no matter what

The if block checks its condition first. The blocks inside only run when the condition is true.

2. Where does the condition go in an if block?

A. In the hexagon slot next to the word if ✓

B. Inside the blocks in the middle of the C shape

The condition fits into the hexagon-shaped slot at the top of the if block. The blocks that run go inside the C shape.

3. Which blocks run if the condition is false?

A. None of the blocks inside the if block ✓

B. All of the blocks inside the if block

When the condition is false, the if block skips the blocks inside it and the script moves on.

4. Which block belongs inside an if block so the sprite says 'Ouch!' only when it touches the edge?

A. say Ouch! (placed above the if block)

B. say Ouch! (inside the if touching edge? block) ✓

A block only depends on the condition when it is placed inside the if block. A block above it runs every time.

5. Which one fits in the condition slot of an if block?

A. move 10 steps

B. score > 10 ✓

The condition slot needs a hexagon block that is true or false, like score > 10. Move is a stack block, so it goes inside the if block.

Match the Pairs

if <score > 10> then → The blocks inside this if block run only when the score is greater than 10.

if <touching edge?> then turn 15 degrees → The sprite turns only when it is touching the edge. Otherwise the turn block is skipped.

The condition goes in the hexagon slot of the if block → if <key space pressed?> then

Blocks that should only run sometimes go inside the if block → if <answer = yes> then say Great!

if <say Hello> then → A say block was put in the condition slot. The slot needs a true or false question, like <answer = yes>. The say block should go inside the if block.

if <score > 10> then say You win! (say is outside the if) → The say block is outside the if block, so it runs every time, even when the score is 10 or less. It should be placed inside the if block.

Key Term

if <condition> then

A block that runs the blocks inside it only when its condition is true. If the condition is false, it skips them. The condition goes in the hexagon slot.

Fill in the Blanks

1. if <score > 10> then say(You win!) end

Hint: Type the keyword that starts the block which runs code only when something is true.

2. if <lives = 0> then say(Game over) end

Hint: Type the word that comes after the condition and leads into the blocks inside.

3. if <score > 10> then say(Well done!) end

Hint: Type the comparison symbol that checks if the score is bigger than 10.

4. if <score > 10> then say(You win!) end

Hint: Type the Looks block name that goes inside the if block and makes the sprite speak.

5. if <touching edge?> then turn 15 degrees end

Hint: Type the word that closes the if block after the blocks inside.

Spot the Error

Question 1

A if <score + 10> then

B say [You win!]

C end

Line A — The slot needs a true or false condition. Score + 10 makes a number, not true or false. It should be if <score > 10> then.

Question 2

A when green flag clicked

B if then <touching [Ball]?>

C say [Got it!] for 2 seconds

D end

Line B — The condition goes in the hexagon slot straight after if, and then comes after it. It should be if <touching [Ball]?> then.

Question 3

A when green flag clicked

B set [score] to 12

C if <score > 10> then

D say <Well done!>

E end

Line D — The say block takes text in a rounded slot. The hexagon shape is only for conditions. It should be say [Well done!].

Question 4

A when green flag clicked

B if <score > 9> then

C say [High score!]

D then

Line D — An if block must be closed with end after the blocks inside it. The word then belongs on the first line. Line 4 should be end.

Question 5

A when green flag clicked

B ask [Ready?] and wait

C if <answer> then

D say [Let's go!]

E end

Line C — The answer on its own is text, not true or false. The condition must compare it, like <answer = [yes]>.

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