Computing · Stage 5

Review: Term 1

Programs & Judgement · review · look back at algorithms, binary, databases and your online identity

✦ Computing📘 Stage 5 · S5⏱ ~12 min🧒 Ages 9–10★ Free to start

I can recall algorithms, binary and databases.

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Kavi Looks Back at Term 1

Kavi settled into the reading nook with a mug of acorn tea. "Look how far we flew this term!" Kavi hooted. "We learned to write an algorithm — a clear plan built from just three steps: sequence (in order), selection (choose with IF–THEN) and iteration (repeat with a loop), even a loop inside a loop. We peeked inside the machine and found that it stores everything as binary — only two digits, 0 and 1 — where a single 0 or 1 is a bit. We tidied facts into a database, with a record for each thing and a field for each kind of fact. And we learned that every post we make shapes our reputation online." Kavi smiled. "Let's look back and make sure it all stuck."

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What your child will learn

1Everything we learned in Term 1Term 1 had four big ideas. Tap each one to bring it back — then you will be ready for the review questions.

2Run the loop in your headAn algorithm can put a loop inside a loop. The outer loop counts the boxes; the inner loop fills each one. To count every body-run, multiply the two repeat numbers. Work it out, then reveal.

3Is it a RECORD or a FIELD?In a database table, a record is one whole row — all the facts about one thing. A field is one column — the same kind of fact for every thing. Tap the right box for each one.

4A bit, or a byte?Binary uses only two digits, 0 and 1. A single 0 or 1 is the smallest piece of all — a bit. Group eight bits together and you get a byte, which is enough to store one letter. Bits are tiny; bytes are bits bundled up.

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A peek inside

An algorithm sets the score to 0, then repeats for 5 questions: IF the answer is correct, add 1; ELSE keep the score the same. A player gets 3 correct and 2 wrong. What is the final score?

the loop runs the same IF 5 times; only the 3 correct answers follow the THEN road and add 1: 0 + 1 + 1 + 1

Try this at home: An algorithm is built from three kinds of step: sequence, ____, and iteration.

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Part of Computing · Stage 5 · S5 on KAVI Academy — a secular, whole-child learning platform for ages 5–12.