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Lesson Plan 2 Math Title Probability Introduction Probability is the study of random events The theory of probability is an important branch of mathematics with many practical applications in the physical medical biological and social sciences An understanding of this theory is essential to appreciating weather reports medical findings political doings and the state lotteries Objectives In this lesson students will Collect organize display and interpret data Understand the basic principles of probability Session time 40 50 minutes Materials Two dice Probability graph Methods Teacher demonstration cooperative learning interactive participation guided discussion Procedure 1 Introduce probability If a person tosses a coin only 1 out of 2 sides can show when it lands so the probability for either side is 1 out of 2 or However if a die with numbers 1 6 is rolled the probability of any number showing is 1 out of 6 or 1 6 If there are 3 socks in a drawer 2 red and 1 blue the probability of blindly pulling out a red sock is twice as great as that for a blue sock Red sock 2 out of 3 or 2 3 and blue sock 1 out of 3 or 1 3 2 Show a die and ask which number will be on top when you roll it 3 Have the student roll one die 20 30 times and record the result on a graph 4 Show the student the Probability Graph and two dice 5 Have the student roll the dice several times and after each roll color in a square above the sum of the 2 numbers 6 After about 30 rolls ask which sum was rolled the most times Probably 7 Which sums were rolled least Probably 2 and 12 Discuss why Note This lesson is included in the workshop Math Manipulatives for the ABE GED Classroom in the SIPDC Catalog of Professional Development Opportunities Probability Graph 2 3 4 5 6 7 8 9 10 11 12


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