
History · 4 lessons
Make sense of years and calendars
Centuries, leap years and eleven missing days: untangle the oddities of our calendar, one short read at a time.
Read · try · build on it
Start with the essentials, then connect the ideas. Try a short explanation, explore an example, then check what you’ve learned.
Try the Reasoning Challenge · 12 puzzles, no timer →
Finish a quick quiz to tick off a chapter. Your progress is saved as you go.

History · 4 lessons
Centuries, leap years and eleven missing days: untangle the oddities of our calendar, one short read at a time.

Numbers & logic · 7 lessons
Seven short lessons: start with equal pieces, read and compare fractions, meet decimals, then use ratios to make a picnic drink. Optional quizzes included.

Numbers & logic · 9 lessons
Short maths lessons from counting and equal sharing to squares, prime numbers and the difference between mean and median. Optional quizzes included.

Numbers & logic · 7 lessons
Seven short mental math lessons: make friendly numbers, round, double, divide and build percentages, then discover why equal percentage changes do not cancel. Optional quizzes included.

Numbers & logic · 7 lessons
Seven short lessons: find patterns, turn shapes, combine rules, count overlaps and discover why a fair coin does not remember earlier flips. Optional quizzes included.

Science & nature · 2 lessons
Discover why the sky is blue and sunsets turn red. Two short science lessons connect everyday sky colours to the journey of sunlight.

Science & nature · 6 lessons
Explore day and night, Moon phases, seasons, time zones and eclipses, then discover why the Moon keeps its familiar face towards Earth.

Words & puzzles · 8 lessons
Eight short English lessons: follow context clues, explore meanings, rearrange letters, unpack blends and discover the contradictions inside everyday expressions. Optional quizzes included.