Measurement of the possible occurrence of an event

1. Probability
Chances or odds of an event
occurring

2. There are different
outcomes
• Unlikely
• Likely
• Always (no other possibilities)
• Never (impossible)

3. Spinner 1
• Look at this picture.
If it was used as a
spinner, you would
have the same
chance of landing on
blue, yellow, red,
and green.

4. Spinner 2
• Look at this picture.
Do you have the
same chance of
landing on yellow as
you do blue or red?
• What color are you
more likely to land
on?

5. Spinner 3
• What if this
picture was used
to make a
spinner? What are
the chances of
landing on yellow?
Green? Blue?

6. Dice
• Dice - means a
pair of cubes with
dots on them
• Die - means one
cube
• The number of
dots are from 1-6

7. Die 1
• Each number appears
on a die only one
time.
• Since there are 6
numbers, the
probability of rolling
numbers 1-6 is 1/6 or
one out of six.

8. Die 2
• If you are using a
die, what is the
probability of
rolling a two? A
four? A three? A
nine? A seven?

9. Die 3
• If you are rolling
dice, what is the
probability of rolling
a seven? A nine?
• Remember dice
means two cubes and
there are 12
possibilities.

10. Deck of Cards
• How many cards
are in a deck,
excluding jokers?
• How many are
red?
• How many are
black?

11. Deck of Cards 2
• How many are
hearts? Diamonds?
Spades? Clubs?
• How many are
queens? Aces?
Kings? Jacks?

12. Deck of Cards 3
• To determine the
probability of
drawing a particular
card, first count the
number of cards,
then count how many
are that particular
kind.

13. Deck of Cards 4
• What is the
probability of
drawing a 4? A
King? A red card?
A club?

14. Colored Objects
• You can determine
the probability of
colored objects by
counting how many
objects there are
altogether and how
many there are of a
particular color.

15. Colored Objects 2
• If there were 32
marbles in this jar
and 9 of them were
blue, then the
probability of
drawing a blue
marble would be
9/32 or 9 out of 32.

16. Let’s Practice
• http://nlvm.usu.edu/en/nav/frames_
asid_186_g_1_t_1.html
• http://www.bbc.co.uk/education/mat
hsfile/shockwave/games/fish.html