ACARA Digital Technologies Years 5–6 Crossword: Algorithms with Branching and Repetition (Modules 106–119)
Name:
Date:
Class:
✎
Crossword
Read each clue and write the matching term in the grid. Numbers in brackets show the letters in each word.
1
2
3
4
5
6
7
8
9
Across
- 2. What the whole algorithm achieves. Follow the steps, check what it SHOWS and read the variable names for clues, then say it in one sentence. (7)
- 5. A diagram that uses an oval for start and end, a rectangle for a step and a diamond for a yes or no question, all joined by arrows that show the order. (9)
- 7. The three building blocks of algorithms: steps in order, decisions (IF) and repeats (loops). Traffic lights, self-serve checkouts, automatic doors and alarm apps all use them. Word 3 of: sequence, branching, _________ (9)
- 8. A loop that keeps repeating its steps ______ the counter reaches the chosen number, 5. The counter must change inside the loop, or the loop never stops. Word 2 of: REPEAT _____ _____ = 5 (5)
- 9. A table with a column for each variable and a row for each step or repeat. It shows how the values change, and the first row holds the starting values. Word 1 of: ________ table (8)
Down
- 1. A loop that never stops because its stopping condition can never become true. Something inside the loop, like a counter, must change to work towards the condition. Word 1 of: ________ loop (8)
- 2. Same steps that appear again and again. Replace them with one loop to make the algorithm shorter, with the same result. Word 2 of: _________ _______ (7)
- 3. Word 1 of the term in 2 Down: _________ _______ (9)
- 4. Makes a counter. ______ before the loop, ADD 1 TO ______ inside the loop each time it repeats, then SHOW ______ after the loop. Word 2 of: SET _____ TO 0 (5)
- 6. Inside a loop, the IF checks each item. Only when the item meets the condition does the counter go up by 1. If the condition is false, the counter stays the same. Word 2 of: IF ____ = red THEN _____ ← _____ + 1 (4)
Answer Key
ACARA Digital Technologies Years 5–6 · Modules 106–119
1I
2P
U
3R
P
O
S
E
N
4C
A
E
5F
L
O
W
6C
H
A
R
T
P
I
U
A
T
E
N
N
R
7I
T
E
R
A
T
I
O
N
I
T
D
R
T
T
8U
N
T
I
L
E
N
9T
R
A
C
K
I
N
G
Across
2PURPOSE — What the whole algorithm achieves. Follow the steps, check what it SHOWS and read the variable names for clues, then say it in one sentence.
5FLOWCHART — A diagram that uses an oval for start and end, a rectangle for a step and a diamond for a yes or no question, all joined by arrows that show the order.
7ITERATION — The three building blocks of algorithms: steps in order, decisions (IF) and repeats (loops). Traffic lights, self-serve checkouts, automatic doors and alarm apps all use them. Word 3 of: sequence, branching, _________
8UNTIL — A loop that keeps repeating its steps ______ the counter reaches the chosen number, 5. The counter must change inside the loop, or the loop never stops. Word 2 of: REPEAT _____ _____ = 5
9TRACKING — A table with a column for each variable and a row for each step or repeat. It shows how the values change, and the first row holds the starting values. Word 1 of: ________ table
Down
1INFINITE — A loop that never stops because its stopping condition can never become true. Something inside the loop, like a counter, must change to work towards the condition. Word 1 of: ________ loop
2PATTERN — Same steps that appear again and again. Replace them with one loop to make the algorithm shorter, with the same result. Word 2 of: _________ _______
3REPEATING — Word 1 of the term in 2 Down: _________ _______
4COUNT — Makes a counter. ______ before the loop, ADD 1 TO ______ inside the loop each time it repeats, then SHOW ______ after the loop. Word 2 of: SET _____ TO 0
6CARD — Inside a loop, the IF checks each item. Only when the item meets the condition does the counter go up by 1. If the condition is false, the counter stays the same. Word 2 of: IF ____ = red THEN _____ ← _____ + 1