∞ Math Detours

The more you see, the less you have to remember.

Math that is just around the corner from what you do at school. One printable sheet a night, ten to twenty minutes, and a few things that will surprise you.

1Pick your gradeFinding it easy? Pick the grade above. Each grade has its own page with every sheet, a suggested order for the first thirty nights, and a printable club card.
2Print one sheetTwo or three pages. The answers print on their own page at the end, so fold it back or hand it to a grown-up.
3Play with the demosShort on-screen toys that go with particular sheets live in the demo gallery, shared across every grade.

Grades pick yours

Grades 5 to 12 are live. Grades 1 to 4 are not ready yet.

Grade 1

Ages 6 to 7

Not yet. We are still working out what suits this age.

Grade 2

Ages 7 to 8

Not yet. We are still working out what suits this age.

Grade 3

Ages 8 to 9

Not yet. We are still working out what suits this age.

Grade 4

Ages 9 to 10

Not yet. We are still working out what suits this age.

Grade 5

Ages 10 to 11

48 printable sheets in three tracks, from why long multiplication works to a game you can always win, a first-thirty-nights plan, and demos in the shared gallery. Live now.

Grade 6

Ages 11 to 12

61 printable sheets in three tracks, a first-thirty-nights plan, and demos in the shared gallery. Live now.

Grade 7

Ages 12 to 13

48 printable sheets in three tracks, from why minus times minus is plus to a wheel that is not round, a first-thirty-nights plan, and demos in the shared gallery. Live now.

Grade 8

Ages 13 to 14

56 printable sheets in three tracks, from why slope is the same everywhere to a cube in four dimensions, a first-thirty-nights plan, and demos in the shared gallery. Live now.

Grade 9

Ages 14 to 15

48 printable sheets in three tracks, from factoring with a rectangle to how a map app finds the shortest route, a first-thirty-nights plan, and demos in the shared gallery. Live now.

Grade 10

Ages 15 to 16

59 printable sheets in three tracks, proofs and calculus previews included, a first-thirty-nights plan, and demos in the shared gallery. Live now.

Grade 11

Ages 16 to 17

48 printable sheets in three tracks, from why radians to the bottleneck theorem, a first-thirty-nights plan, and demos in the shared gallery. Live now.

Grade 12

Ages 17 to 18

58 printable sheets in three tracks, from what a limit is to how much to bet, a first-thirty-nights plan, and demos in the shared gallery. Live now.

What every grade gets

SharpenEverything on that grade's curriculum, with the "why" that school sometimes skips and problems a notch harder than the ones they will be set.
Around the cornerIdeas that are nearby but not on the syllabus: primes, binary, clock arithmetic, infinity, imaginary numbers, matrices. Chosen to build intuition and to surprise.
ConnectionsWhere the math shows up: music, astronomy, magic tricks, maps, sport, elections.