PRACTICE

Each program trick contains two methods of practice: on computer and print out.

PRACTICE ON COMPUTER:

1) Select how many problems to practice (all problems are randomly generated).
2) Select the difficulty level   (some tricks have only one level).
3) Start practicing.
    a)  If the answer is correct then the correct button lights up.
    b)  If the answer is incorrect then the wrong button lights up and the correct answer is given.
    c)  The timer keeps time, except when you miss a problem and are studying the answer.
4) At the end of the practice session, the number correct appears and the time taken appears.

PRACTICE ON PRINTOUT:

1) Select how many problems to practice (all problems are randomly generated)
2) Select the difficulty level (some tricks have only one level).
3) Print problems.
    a) Practice problems will be printed on the left side and correct answers on the right