Subjectastronomy2body and care0code0drinks0food0language1maths2music0science0signals0sport3units0vehicles0
PHASES OF THE MOON
eight phases · a full cycle of 29.53 days
$1.50
THE SOLAR SYSTEM
eight planets · size, distance, year and day
Free
ENGLISH ALPHABET
26 letters · 5 vowels · 21 consonants
$1.50
NUMBERS 1 TO 100
the hundred chart · primes picked out in colour
Free
MULTIPLICATION TABLE
1 to 12 · colour intensity = size of the product
Free
THE BASKETBALL
four FIBA sizes with their circumference and mass — and why the rules set a bounce, not a pressure
Free
FOOTBALL: THE BALL
Law 2, three codes of the game, five sizes and three FIFA quality marks — what a ball must survive
$2.50
BALLS BY THE RULES
eleven sports at true relative size — circumference, mass, pressure, and who sets them
Free