GREEK ALPHABET
24 letters · names and where science uses them
IRREGULAR VERBS
the 100 you meet most: base · past · past participle — grouped by the four patterns, not shuffled alphabetically
LETTER TEAMS
40 letter combinations and the sounds they spell, in IPA, with one example word each
PASCAL’S TRIANGLE
the first thirteen rows, the sum of each row and the pattern of the odd numbers
REPEATING DECIMALS
which fractions stop, which run for ever, and how to know the length of the repeat without dividing
ROMAN NUMERALS
seven symbols · ones, tens, hundreds · years
THE SOPRANO RECORDER
all 27 notes from C5 to D7 in the Baroque and German systems — and how to tell which one you hold
THE VERTICAL PLANET
from the Challenger Deep to the summit of Everest · one scale, nothing compressed
GREEK LETTERS IN SCIENCE
10 capitals with a shape of their own, 14 twins of Latin letters, and what each one stands for
THE MOHS HARDNESS SCALE
ten reference minerals and five household probes: who scratches whom
THE PERIODIC TABLE
all 118 elements: symbol, atomic number and IUPAC atomic weight in every cell — blocks in colour, lanthanoids and actinoids offset below
ROCK CLASSIFICATION
the three classes, 24 named rocks and the cycle that links them — after USGS and NPS
SPECTRAL LINES
five gases on one wavelength scale, from the violet edge to the red
THE TREE OF LIFE
who sits inside whom · where animals, fungi and plants actually are
SI BASE UNITS
seven constants given an exact number — and the seven units that follow from them
SI DERIVED UNITS
twenty-two with names of their own — and what each one is made of
SI PREFIXES
from quetta to quecto · twenty multipliers