Start here: first lessons

Six first lessons for young beginners, one from each of six topics. Pick any one, or go in order. Each lesson ends with where it leads; when you like a topic, climb its ladder of 8 levels.

	Lesson	The question	Its topic
1	Counting things	why two people can count differently	Numbers
2	Circles, triangles and squares	name every shape you see	Geometry
3	Repeating patterns	what comes next?	Patterns
4	Dressing a teddy	how many different outfits?	Counting
5	Sure, maybe, never	how likely is it?	Probability
6	The biggest number game	is there a biggest number?	Infinity

There are 13 topics in all: see every topic.

For parents and teachers: level 1 suits most children from about 5, level 3 from about 9, level 5 from about 12, level 7 from about 15. Every lesson works on paper, and the answers to the questions are folded until you tap them.