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
THE HAMBURGER
the ratios of the mince and the five steps that decide the result
$1.50
SUGAR IN FRUIT
grams of natural sugar per 100 g of fresh fruit — and how much water sits beside it
$2.50
NEAPOLITAN PIZZA DOUGH
four ingredients in the proportions written into an EU regulation
Free
POUND CAKE
four equal weights — a recipe whose name is its ratio
Free
PROTEIN IN FOODS
grams per 100 g · animal and plant · and the state each one was weighed in
Free
BARRE CHORDS
two shapes, twelve chords each
$1.50
CIRCLE OF FIFTHS
12 keys · key signatures · relative minors
$2.50
THE ELECTRIC GUITAR PICKUP
one coil or two · six builds · where it sits along the string, and how high above it
$2.50
FIRST CHORDS
15 chords every beginner starts with · standard tuning E A D G B e
$1.50
NOTES ON THE FRETBOARD
standard tuning E A D G B e · first twelve frets
Free