2. Probability and Fractions By Mr. Bales

3. Objective  By the end of this lesson, you will be able to describe probability in words and numbers.  Standard 4SDAP2.2 - Students will express outcomes of experimental probability situations verbally and numerically (e.g., 3 out of 4, or 3/4)

4. Introduce  In this bowl, I have ten colored shapes. I have 7 blue, 2 red, and 1 yellow.  How likely is it that I will draw a yellow shape?  How likely is it that I will draw a white shape?  Fractions can be used to describe the probability of an outcome.  How many shapes are blue?  How many total shapes are in the bowl?  The probability of choosing a blue shape is 7/10.

5. Probability as a Fraction  Find Probability  Use words and a fraction to describe the probability of rolling a six on a die.  One out of six numbers on a die is a six. Probability = number of favorable outcomes total possible outcomes Probability = number of 6’s total possibilities on die = 1/6 So, the probability of rolling a 6 on a die is 1 out of 6, or 1/6

6. Activity  On your tables are three lunch bags with seven colored tiles in them. I will not tell you how many of each color there are, and you MAY NOT PEEK!!  On the board, you will see that the bags contain a cure for a specific celebrity that has taken ill.  It is your goal to find out which bag belongs to which celebrity.  Rules:  Start with one bag, and take turns in your group reaching in the bag and taking a shape out, noting its color on your whiteboard, and put it back in the bag.  Record the colors as they are picked on your whiteboard.  After each of you has drawn a tile or two from each bag, discuss the results.  Predict which sign you think matches the bag.  Record your final prediction for your group on the front whiteboard.

7. Hi! Mr. Hardesty!!

8. Bales Bucks!!

9. Assignment  Page 638 - #’s 11 - 23  Get them all correct - No Math Homework