Sensors, tiny computers and keeping devices healthy
Answers are for parents and teachers.
1
Name two places in your home or school where a sensor could help (for example, a light that switches off by itself). Say what it would measure.
Answers differ. For example: a motion sensor in a corridor light; a temperature sensor for a fan.
2
Electricity use at noon is 6 units and in the afternoon 9. Find the total for the two times and the difference.
Total 15 units (6 + 9); difference 3 units (9 − 6).
3
Write a problem at your school and a technology idea. Say who would benefit.
Answers differ. Check for a real problem, a possible idea and a person who benefits.
4
List four rules for safe installing and updating.
Answers differ. For example: official stores only; ask a grown-up; never click unknown links; let the update finish.
5
A tablet takes 3 minutes to start an update and 12 minutes to finish it. How long is the update in all? If you start at 4:10, when does it end?
15 minutes (3 + 12). It ends at 4:25.