Calculators
Calculators don't normally fit people's ideas of educational computing, but the need to calculate numerical tables for navigation, tides and gunnery was a major driving force for the invention of algorithms and computers, and thus calculators hold a special place in the historical development of computing at its most mathematical and its teaching.
- Noisy calculators
- Hundreds of students using mechanical calculators in an examination makes a distracting noise
- Using a calculator in an arithmetic exam
- Using a Brunsviga mechanical calculator for O-Grade Arithmetic examination
- Electronic calculators and imperial units
- An early encounter with electronic calculators in quantity surveying

