Year 2 Lesson Plan 17 - Probability

  1. (5 min) Mental Math
    1. Divide 6000 by 100, add 16, then divide by 2 [38]
    2. Divide 3/4 by 2/3 and subtract 1 [1/8]
    3. What is 1/7 - 1/8? [1/56]
    4. If x - 5 is 13, what is x? [18]
    5. If x is 50, what is 4x - x + 1? [151]

  2. (10 min) Discuss probability

    Optional: Hand out the "Cards and Dice" sheet to help students find probabilities.
    Follow the discussion on the first handout.
    This is repeat material so this part of the lesson is just a review.
  3. (10 min)Discuss multiple probabilities.

    Follow the discussion in the second handout.

    This lesson can be made more graphic by bringing in a deck of cards and a pair of dice to illustrate your concepts. They can be laid out on the floor so the students can see the possibilities.
  4. (Remainder of class) In-class exercise

  5. Hand out homework as students successfully complete the in-class exercise.