Readers ¶Short programs to read before you run them. Guess what each one prints, run it, then read the notes.A1 First wordsCountdownA rocket counts down from ten. Read the program and guess what it prints before you run it.Is it a palindrome?Six words, read forwards and backwards. Guess which of them are palindromes before you run the program.A2 Everyday RakuAt the marketFive things from the market and what they cost. In what order does the program list them?Weather in four citiesToday’s temperature in Riga, Amsterdam, Turin and Belgrade, in Celsius and Fahrenheit, with a word for how it feels.B1 Getting aroundThe departure boardFive trains, one small class, and three questions to the timetable — all trains in order, the trains to Rotterdam, and the first one after nine.Pancakes for sixA recipe for four people, scaled for six and for five. A third of a cup of sugar shows how Raku keeps fractions exact.B2 IndependentThe school tournamentFour school teams play each other once. Six results become a league table in twenty lines, with X, Z, [+], » and a junction.C1 FluentA pocket calculatorA grammar and an action class that read an arithmetic expression like 2 + 3 * (4 - 1) and work out its value.