use with Internet Explorer only.]
of this "game" is to illustrate just how difficult it can be at
times to insure you get at least one male and one female urchin in
order to do your research.
If the counters
are not already at zero, press "Reset".
Then press "Spawn" and "New Urchin" until you have at
least one male and one female [min. # necessary to do an experiment].
1) How many did
[hint: write down values from several runs]
2) What is the ratio of males to females in the population? [hint:
spawn 100 urchins]
3) How accurate is your answer and
[Compare to expected value.]
4) What other factors might affect an urchin's ability to spawn?