- (5 min) Mental Math
- How many ways can I reorder the letters in the word "DESK"? [24]
- What is one third of one third of one third? [1/27]
- Multiply 2/3 by 1/4 and reduce [1/6]
- Start with 22, add 55, then divide by 7 [11]
- Which is larger, 1/4 or .255? [.255]

- (5 min) Review of homework #24 (<= 3 problems)

- (10 min) Review of the second half of the year:

- Find the mean, mode, median, and range of this set:

22, 11, 16, 18, 24, 11, 31 [Mean=19.0,mode=11,median=22,range=20]

- Probability of getting 2 red marbles out of a bag of 9 red, 5 blue
and 4 green marbles:
9 8 4 --- X --- = --- (have students do the canceling) 18 17 17

- How many ways to reorder the letters in these words:

GOALS MANY 5 X 4 X 3 X 2 X 1 = 120 4 X 3 X 2 X 1 = 24

- Find the mean, mode, median, and range of this set:
- Hand out homework as students successfully complete the in-class exercise.

If your students are still having trouble with guess-and-check, then you might want to work through problem one together, then turn them loose on the remaining problems.