A key opens one value.
Tap a planet name and watch its key read a value from the Dictionary.
Earth days in one home-planet year
Spelling and capital letters must match. "Mercury" is a key; 88 is its value.
Change the unit. Keep the lifetime.
Change the age or planet, then switch units. The formula and passport update together.
Source cards:
Try a different age
Optional teaching control. Open the results whenever you like.
1 EARTH YEAR = 365 DAYS · APPROXIMATE PLANETARY YEARS
Same time lived, different units. Round for display only; keep the unrounded value in the Dictionary.
Give every field a name.
Tap any key or passport field. Follow the highlighted value, then change the source and watch it update.
passport[?]Choose a key.
EARTH VISITOR PASSPORT
{ } creates the Dictionary. [key] reads a value. passport is one Dictionary.