Everyday Maths & Science Knowhow.

One small, useful piece of knowhow for every day of the year, and a calculator that runs it with your own numbers.

Start week 1 free See the prices
✍️ From the founder on Everyday Maths & Science Knowhow
How a day works

Read it, then try it with your own numbers.

Each day explains one everyday thing in plain words, then lets you try it on your own situation: your electricity rate, your recipe, your training week. Your tries are kept, so you can come back to them.

1

Learn

A short explanation of one useful idea, with its source.

2

Try it

A small calculator or table that works with your own numbers.

3

My tries

Everything you tried, kept for you to look back on.

Three editions

365 days each, week 1 free.

Every edition is a full year: 52 weekly themes, each with a start-here page, seven days and the weekly ten, a quiz on the week.

Edition one

Home & Life

Energy, water, percentages, interest, the till slip, the kitchen and much more: the numbers of ordinary life.

Week 1 free
Edition two

Numbers

Interesting numbers and mental-arithmetic tricks, with timed practice rounds that keep your personal best.

Week 1 free
Edition three

Sport

The body, the physics of the ball, reading the game, training, kit and the contest, by the numbers.

Week 1 free
How it fits

Learning to learn, to think and to teach, a day at a time.

LearnSmart4Life is about learning to learn and learning to think, and about teaching both. Everyday Knowhow is where those skills become a daily habit.

See it work

How a Knowhow pass works.

Week 1 free with no account, a pass opening on the spot, a second device, a gift and a class: a minute and a half.

How a Knowhow pass works, in a minute and a half.
Prices

Week 1 free, then the year.

Week 1 of every edition is free to read, with no account: its start-here page, seven days and the weekly ten. Then a pass opens the year. A pass is a code with your email as its key: no account, no password. Buy one for yourself, as a gift, or one for each person in a class.

A week at a time

R295 / edition

Week 2 opens the day you first use the pass, then one more each week, so all 52 are open within the year.

Home & LifeNumbersSport

All at once

R395 / edition

All 52 weeks of the edition open from the day you first use the pass.

Home & LifeNumbersSport

All three editions

R795

Home & Life, Numbers and Sport, all open from the day you first use the pass: 1,095 days.

All three editions

Already have a pass? Enter it here.

Start free

Week 1 of every edition, no account.

Read week 1 of Home & Life, Numbers or Sport now, with nothing to sign up for. Or try the taster: ten questions from the three editions on the areas you choose; nothing is stored.

Start week 1 Try the free taster