PHASES OF THE MOON
eight phases · a full cycle of 29.53 days
THE SOLAR SYSTEM
eight planets · size, distance, year and day
DEVELOPMENTAL MILESTONES · YEAR ONE
2, 4, 6, 9, 12 months per the CDC checklists (2022 revision): 59 milestones that at least 75% of children reach by each age
DEVELOPMENTAL MILESTONES · YEAR TWO
15, 18, 24 months per the CDC checklists (2022 revision): 41 milestones that at least 75% of children reach by each age
BINARY COUNTING
five doubling cards build every number from 0 to 31 — exactly the way every computer counts
SUGAR IN DRINKS
how many sugar cubes hide in a glass — from water to cola, by the USDA reference
ENGLISH ALPHABET
26 letters · 5 vowels · 21 consonants
THE CLOCK FACE
two hands, twelve numbers — how to read the time
NUMBERS 1 TO 100
the hundred chart · primes picked out in colour
MULTIPLICATION TABLE
1 to 12 · colour intensity = size of the product
MUSICAL DYNAMICS
the loudness marks from pp to ff, crescendo and diminuendo hairpins — and how the piano got its name