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Wi-Fi and Bluetooth
Find out how bits ride on radio waves, then compare Wi-Fi, Bluetooth and mobile networks by range, speed, power and cost.
⏱ 20 min❓ 9 questions
What you'll be able to do
- ✔I can explain how data is carried by radio waves using modulation
- ✔I can compare Wi-Fi, Bluetooth and mobile networks for a given use
- ✔I can calculate wavelengths and transfer times for wireless links
How this works
- 1Read the short explanations first — they teach you what you need before each question.
- 2Answer each question, then tap Check. A right answer moves you on automatically; if it's wrong, you'll see a friendly explanation of why.
- 3Finish all 3 steps to see your score — sign in and subscribe to unlock the full lesson and save it.
What's inside
9 questions and 1 quick teaching card, including:
- ✏️Fill in the blank — Type the missing word to complete the sentence.
- 🔢Number answer — Work out the answer and type the number.
👪Grown-up tip: sit alongside younger learners for the first few lessons. Read the questions together and chat about the explanations — that's where the real learning sticks.
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Curriculum: AC9TDI8K02