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On Desk: 1. Pencil 2. Math Journal 3. WDYE Learning Log 4. Parent Signatures? Learning Log: 1. HW: p.58 #1-labsheet, #2-3, #15-20, 23-25 Math CC7/8 – Be Prepared
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Warm Up Lesson 3.1 Probability with Spinners Begin HW? Tasks for Today
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P(brown) = 5/20 = 1/4 No! It will simplify to the same answer. P(brown) = 10/40 = 1/4 Warm Up
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Solving Equations and Angle Review: Solve for x. (z + 80)3z D E B A C Without measuring, find the measure of angle CBD in degrees. 6(10 + x) AB C
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They all give him the SAME chance of going to bed at 11:00! Eleven o’clock covers ½ of each circle.
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Alphabet Spinner In your journals - Find the theoretical probability of landing on A, B, C, D, E. What must you do first? Divide into equal size pieces! How many Ds are in B? C? A? E? What is your common denominator? P(A) = 4/16 = 1/4 P(B) = 2/16 = 1/8 P(C) = 2/16 = 1/8 P(D) = 1/16 P(E) = 7/16
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1.Which time do you think is most likely to occur? Discuss in your groups. 2.Is Kalvin’s father likely to agree to use this spinner? Explain why or why not. 11:00 and 9:00 are equally likely to occur (3/8) Kalvin’s father is probably not likely to agree because he is more likely to go to bed later than 9:00.
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Skip?
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Nine o’clock and 11:00 both cover 3/8 of the circle. P(9:00) = 3/8 P(10:00) = 2/8 = ¼ P(11:00) = 3/8
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P(11:00) = 3/8 = 24/64 P(9:00) = 3/8 = 24/64 P(10:00) = 2/8 = ¼ = 16/64
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