Rolling Two Number Cubes

Rolling Two Number Cubes • Good practice for addition of numbers in primary. • Play some games • See who is the first one to fill all the boxes 2-12 on their strip. Keep track of the number of repeats • I win if the sum is 5,6,7,or 8 you win the rest. • Collect data to see which sums occur most frequently.

Other possibilities with two die: • Absolute value of the difference between the die. • Sum of numbers even or odd • Product of numbers even or odd • Difference of numbers negative or positive • Doubles or not doubles

Going to Recess • 12 students are going to be put into rooms numbered 1-12. • When two number cubes are rolled, the sum of the number cubes indicates which door will be opened to allow one student to go to recess. • Place the 12 students in the rooms of your choice. Each room will hold up to 12 students. • We will roll the dice to see who gets their whole class to go to recess first.

Best Choice • Will a sum of 1 ever occur? • As with any probability experiment each time the game is played will be different. • The best choice is to place the number of students in each room found by multiplying the probability of of getting that number by 12 students. • For example P(7) = 6/36 * 12 = 2

Best Mathematical Choice • 3-1 • 4-1 • 5-1 • 6-2 • 7-2 • 8-2 • 9-1 • 10-1 • 11-1

Rolling Two Number Cubes