Blog
Looking After a Calculator So It Lasts
Batteries, solar cells, sticky keys and screen damage — the small maintenance that decides whether a calculator lasts a year or ten.
Back-to-School Buying That Lasts Past October
What is worth spending on, what is not, and the items that get replaced twice a year because of a false economy.
Five Calculator Mistakes That Look Like Maths Errors
Negative signs, implied multiplication, fraction bars and the degree/radian setting — where wrong answers usually come from.
Is a Graphing Calculator Worth It?
Graphing calculators cost several times what a scientific model does. When that is justified and when it is not.
Desktop Calculators: The Features That Change Daily Use
Digit count, tax keys, the grand total and the check-and-correct function — what actually matters at a desk.
Which Calculator for Which Exam: Reading the Rules
Exam boards approve specific models, not categories. How to check a model number against a syllabus before you buy.
