ACARA Digital Technologies Years 7–8 Crossword: Algorithms, Flowcharts and Pseudocode and Tracing and Debugging Algorithms (Modules 420–481)
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. A mistake in an algorithm's steps. It still runs to the end with no warning, but gives the wrong output. Only tracing or testing shows it, unlike a syntax ______ that breaks the writing rules. Word 2 of: _____ _____ (5)
- 4. An arrow that returns to a decision diamond. Each time you follow it, add a new row to the trace table so every pass of the loop is recorded, until you take the exit arrow. Word 2 of: loop-____ arrow (4)
- 6. Word 1 of the term in 2 Across: _____ _____ (5)
- 7. A bug where a step sits in the wrong place around a loop. A SHOW inside repeats every pass, and an update outside runs only once. Indentation shows which steps are inside the loop. Word 2 of: loop _________ _____ (9)
- 8. Word 3 of the term in 3 Down: ___ row ___ pass (3)
- 9. A bug where a repeat count or stop test is wrong by one, such as count > 5 instead of count = 5, so the loop body runs one time too many or one time too few. Word 1 of: ___-by-___ _____ (3)
Down
- 1. A table listing each flowchart shape you visit in order, the Yes or No answer at each diamond, the variable values after each step, and any output. Word 1 of: __________ table (10)
- 3. Trace an IF inside a loop with ______ row for each pass, showing the condition result (true or false) and any variables that change. The final row gives the output. Word 1 of: ___ row ___ pass (3)
- 4. The THEN and ELSE paths are the wrong way round, so the algorithm gives the opposite result for every input. Fix it by swapping the two paths or by flipping the condition. Word 2 of: swapped ________ (8)
- 5. A trace table ______ headed by a condition, such as age >= 13, that records TRUE or FALSE on each row so you can see which path the algorithm took and why. Word 2 of: condition ______ (6)
Answer Key
ACARA Digital Technologies Years 7–8 · Modules 420–481
1P
2E
R
R
3O
R
4B
A
5C
K
E
N
R
O
D
E
A
6L
O
G
I
C
N
U
C
7P
L
A
C
E
M
E
N
T
H
N
I
8P
E
R
9O
F
F
S
N
Across
2ERROR — A mistake in an algorithm's steps. It still runs to the end with no warning, but gives the wrong output. Only tracing or testing shows it, unlike a syntax ______ that breaks the writing rules. Word 2 of: _____ _____
4BACK — An arrow that returns to a decision diamond. Each time you follow it, add a new row to the trace table so every pass of the loop is recorded, until you take the exit arrow. Word 2 of: loop-____ arrow
6LOGIC — Word 1 of the term in 2 Across: _____ _____
7PLACEMENT — A bug where a step sits in the wrong place around a loop. A SHOW inside repeats every pass, and an update outside runs only once. Indentation shows which steps are inside the loop. Word 2 of: loop _________ _____
8PER — Word 3 of the term in 3 Down: ___ row ___ pass
9OFF — A bug where a repeat count or stop test is wrong by one, such as count > 5 instead of count = 5, so the loop body runs one time too many or one time too few. Word 1 of: ___-by-___ _____
Down
1PREDICTION — A table listing each flowchart shape you visit in order, the Yes or No answer at each diamond, the variable values after each step, and any output. Word 1 of: __________ table
3ONE — Trace an IF inside a loop with ______ row for each pass, showing the condition result (true or false) and any variables that change. The final row gives the output. Word 1 of: ___ row ___ pass
4BRANCHES — The THEN and ELSE paths are the wrong way round, so the algorithm gives the opposite result for every input. Fix it by swapping the two paths or by flipping the condition. Word 2 of: swapped ________
5COLUMN — A trace table ______ headed by a condition, such as age >= 13, that records TRUE or FALSE on each row so you can see which path the algorithm took and why. Word 2 of: condition ______