Make a copy of "DOUBLE EVENT INVESTIGATION" for each of your students. Students will be working in pairs and each pair will need two coins (pennies will do).
This lesson is intended to follow"SINGLE EVENT PROBABILITY." Students will tally the results of two coins being tossed 50 times. They will determine the probability of a particular event (i.e. both coins landing with heads showing) using the results of their tosses. If you thought tossing one coin was noisy, you're going to be in for a shock when you hear two coins hitting the desk or floor! Students will report their tallies to you and you will total the class' results on the board. This data will then be used by the students to determine the probability of the same particular events. The purpose of the lesson is to prepare students for determining hereditary probability. Specifically, as probability relates to dominant and recessive alleles (traits). The last two questions solicit a "guess" of the theoretical values for mutually exclusive double event probabilities.