Years 5–6 Creating Digital Solutions Definitions Worksheet: Designing algorithms with branching and iteration and Designing user interfaces (Modules 21–30)
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Key terms
Write what each term means, in your own words.
1
IF inside REPEAT
2
sequence, branch, loop
3
flowchart sequence
4
decision diamond
5
chained decisions
6
flowchart loop
7
flowchart to steps
8
bug
9
design an algorithm
10
user interface
Answer Key
Years 5–6 Creating Digital Solutions · Modules 21–30 · Student wording will vary for definitions
1IF inside REPEAT — An IF placed inside a REPEAT is checked again on every repetition, so each pass through the loop can take a different path.
2sequence, branch, loop — Most algorithms mix steps in order (sequence), decisions (branch) and repeats (loop). When you read an algorithm, you can label each part and explain it in your own words.
3flowchart sequence — A line of rectangles joined by arrows from the Start oval to the End oval, with one arrow in and one arrow out of each step. Each step is a short action phrase.
4decision diamond — A diamond shape in a flowchart that holds a yes/no question. One arrow labelled Yes and one labelled No lead to different steps, and the paths can join up again later.
5chained decisions — Putting one decision diamond after another, so a No arrow leads to the next diamond. This lets a flowchart choose between three or more paths, and every path reaches End.
6flowchart loop — An arrow that goes back to an earlier shape, usually from a decision diamond, so the steps repeat until the exit condition is met and the exit arrow is followed.
7flowchart to steps — Changing a flowchart into written steps: a diamond becomes IF or a loop condition, a back arrow becomes REPEAT, then check both versions do the same thing.
8bug — A mistake in an algorithm. Follow the steps until the result goes wrong, then fix that step. It might be in the wrong order, missing, or unclear.
9design an algorithm — Start with the user's problem, list the steps the solution must do, then add any decisions and repeats. Think about what the user puts in and needs out, and test the steps with them.
10user interface — The part of a digital system that you see and use. You give input by touching, clicking or typing, and the screen shows you output.