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Annotation of researchv10dc/man/mana/arithmetic.6, revision 1.1.1.1

1.1       root        1: .TH ARITHMETIC 6
                      2: .CT 1 inst_info
                      3: .SH NAME
                      4: arithmetic \- drill in number facts
                      5: .SH SYNOPSIS
                      6: .B /usr/games/arithmetic
                      7: [
                      8: .B +-x/
                      9: ]
                     10: [
                     11: .I range
                     12: ]
                     13: .SH DESCRIPTION
                     14: .I Arithmetic
                     15: types out simple arithmetic problems,
                     16: and waits for an answer to be typed in.
                     17: If the answer is correct,
                     18: it types back
                     19: .LR Right! ,
                     20: and a new problem.
                     21: If the answer is wrong,
                     22: it replies
                     23: .L What? ,
                     24: and waits for another answer.
                     25: Every twenty problems, it publishes
                     26: statistics on correctness and the time required
                     27: to answer.
                     28: .PP
                     29: To quit the program,
                     30: type an interrupt (delete).
                     31: .PP
                     32: The first optional argument determines the kind of problem
                     33: to be generated;
                     34: .B +-x/
                     35: get
                     36: addition, subtraction, multiplication, and division
                     37: problems respectively.
                     38: One or more characters can be given;
                     39: if more than one is given, the different types of
                     40: problems will be mixed in random order; default is
                     41: .B +-
                     42: .PP
                     43: .I Range
                     44: is a decimal number;
                     45: all addends, subtrahends, differences, multiplicands, divisors,
                     46: and quotients will be less than or equal to the value of
                     47: .IR range .
                     48: Default
                     49: .I range
                     50: is 10.
                     51: .PP
                     52: At the start, all numbers less than or equal to
                     53: .I range
                     54: are equally likely
                     55: to appear.
                     56: If the respondent makes a mistake,
                     57: the numbers in the problem which was missed
                     58: become more likely to reappear.
                     59: .PP
                     60: As a matter of educational philosophy, the program will
                     61: not give correct answers,
                     62: since the learner should, in principle,
                     63: be able to calculate them.
                     64: Thus the program is intended to provide drill for
                     65: someone just past the first learning stage,
                     66: not to teach number facts
                     67: .I de
                     68: .IR novo .
                     69: For almost all users,
                     70: the relevant statistic should be
                     71: time per problem, not percent correct.

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