On Desk:1. Pencil2. Math Journal3. WDYE Learning Log4. Parent Sig. on WDYE Quiz?

Learning Log:1. HW: p. 61 #9-13 (need list)

#31-362. Math XL: Mid Year Assessment due

by Friday, Jan. 29th!3. ISD Common Assessment – Th & Fri.

Math CC7/8 – Be Prepared

• Warm Up• Lesson 3.3 – Analyzing a Game– Roller Derby!

• Begin HW?

Tasks for Today

Warm Up

• George has a bag with 12 yellow marbles, 6 green marbles, 8 purple marbles, and 4 blue marbles. If he wants the probability of picking a yellow marble to be ½, what should George do?

Add 6 yellow marblesP(Y) = = ½

Warm Up1. Solve. Record your answer as a decimal.

4.3 ÷ -

2. Solve the equation. Show all your steps.

5 (4 – 2x) + 3 = -7

1) -7.1 2) x = 3

Use labsheet 3.3 under doc camera – Students against Teacher

Have a student volunteer record dice and sum on board

What might be a good way to organize this data?A table?! Let’s do it together. (You’ll need this for tonight’s HW!)

Sum of Two Dice

Cube #1

Cube #2

1

23

4

56

1 2 3 4 5 6

Sum of Two Dice - KEY

36 possible outcomes

Only 11 different possible sums

No…Only one!

P (sum of 4) = 3/36 = 1/12 (1+3, 3+1, 2+2)

P (sum of 6) = 5/36 (1+5, 5+1, 2+4, 4+2, 3+3)

The sum of 7 occurs most often. (6 times)The sum of 6 and 8 occur next most often. (5 times)

There are more ways to get sums that are close to the middle numbers (6, 7, 8), so the markers should be clustered toward the middle!