
The smallest Kropki: a 4x4 grid of digits 1 to 4 in four boxes, one per page, where a handful of dots is enough to place every digit.

The smallest Kropki: a 4x4 grid of digits 1 to 4 in four boxes, one per page, where a handful of dots is enough to place every digit.

Four small 4x4 Kropki grids per sheet, each with its own digits and dots, at Easy, Medium or Hard: a whole set of practice on one page.

Mid-size Kropki on a 6x6 grid with boxes two rows tall and three columns wide, one per page, where doubles such as 3 and 6 start to matter.

Four 6x6 Kropki grids per page at the same level, each with its own dots: a compact set for practice at home or in class.

The classic 9x9 Kropki, one grid per page, with boxes of three by three and four doubles to track: 1 and 2, 2 and 4, 3 and 6, 4 and 8.

Four 9x9 Kropki grids on one sheet, compact but complete, at a single level per page: a dense set of dot sudokus for regular solvers.

Pages of empty 3x3 tic tac toe boards, from four large ones to twenty small ones, ready for a pencil and two players.

Bigger tic tac toe boards, 4x4 and 5x5, where winning takes a full line of four or five marks, with four to nine boards per sheet.

The smallest Hidoku: a 5x5 grid where the numbers 1 to 25 must form one path, one big grid per page, ideal for learning the rules.

Four small 5x5 Hidoku grids share every sheet, and every grid hides a different path from 1 to 25; one level per sheet, four mini puzzles per print.

A step up from the smallest grid: 36 cells to fill with one chain of numbers, one grid per page, where the gaps between clues grow longer.

Four 6x6 Hidoku grids on each sheet, every one with its own path from 1 to 36, all at the same level, for practice in sets of four.

A 7x7 grid where 49 numbers must line up into one path, one grid per page, from friendly to demanding.

Four 7x7 Hidoku grids per page, each a separate path from 1 to 49 at the same level: compact sets of the number chain puzzle.

The largest Hidoku of the series: 64 numbers to link into one path on an 8x8 grid, one grid per page, for patient and experienced solvers.

Four 8x8 Hidoku grids on every sheet, each a 64-number path at a single level: the biggest grids of the series, four at a time.

Counting practice with simple shapes, from the first numbers up to 20: count the shapes of one kind and write how many, then read a number and draw that many shapes.

The five Platonic solids as nets to print, cut out and fold, from the four triangles of the tetrahedron to the twenty of the icosahedron.

Nets of prisms, two equal polygons joined by squares or rectangles, and of antiprisms, where the band between the two polygons is made of triangles.

Nets of pyramids and bipyramids to cut out and fold, every triangle equilateral: a square and a pentagonal pyramid, and two double pyramids.

Archimedean solids as nets to print and fold, each built from two kinds of regular faces, from the truncated tetrahedron to the soccer ball shape.