The document describes different probabilities using examples. It discusses weather forecasts that give a 50% chance of rain as being a probability. It also discusses having a one in a million chance of winning as another example of a probability. The document then provides examples of different events and their probabilities, including the likelihood of it raining or snowing in the Philippines, the probability of two people sharing a birthday in a group of 15, and the chances of someone winning a fight according to a sports analyst's prediction.

1. Describing the meaning of
probability such as 50%
chance of rain and one in a
million chance of winning.
Prepared by: Emilie A. Marcelo

2. What will happen next?
Today in art class we are making
pictures with water colors. We have
paint a picture of rainbow. I took out
some paper, some paint, and a
paintbrush.
What do you predict will happen
next?

3. Weather forecasters make their predictions using
probabilities.
Let us consider the chance that each of the following
events will occur.
(A) It will rain in the Philippines tomorrow.
(B) It will snow in the Philippines tomorrow.
(C) The likelihood that 2 people in any group of 15 will
have the same birthday is about 8%.
(D) The weather forecast says 50% chance of rain today.
(E) The sport’s analyst says that Manny Pacquiao has 75%
chance of winning his fight.
(F) The sun will rise tomorrow.

4. Less probable
than not
More probable
than not
O
0.0
0%
Impossible
¼
0.25
25%
Unlikely
½
0.5
50%
As likely
As unlikely
¾
0.75
75%
Likely
1
1.0
100%
Certain
Probability

5. Probability
 is the measure of
chance.

6. Write the probability of
spinning each letter.
1. The letter B _____
2. The letter C ____

8. Pair Share:
Find the probability of drawing the
following letters from the word
“Mathematics”.
1. P(M) ____
2. P(A) ____
3. P(T) ____
4. P(H) ____
5. P(E) ____
6. P(C) ____
7. P(S) _____
8. P(I) _____

9. A. Directions: Which of the following situations
can be considered as unlikely to happen, likely
to happen, equally likely to happen, impossible
to happen, or certain to happen? Write your
answer on the blank before each number.
______1. The sun sets in the east.
______ 2. A pregnant woman with a big and
round stomach may have a baby girl.
A
C
T
I
V
I
T
Y

10. ______ 3. An earthquake occurred.
There will be a tsunami.
______ 4. The teacher is beautiful, so
she is a very good teacher.
______ 5. The jeepney that runs is
likely to meet an accident.

11. B. Directions : Read each statements. Match it
to the correct prediction.
1. Billy was cold. a. We put on
sunglasses.
2. The sun came out. b. Soon we will
eat.
3. It started to rain. c. He put on a
jacket.
4. The phone rang. d. I need an
umbrella.
5. Mother is cooking. e. I answered it.

12. What is the
meaning of
Probability?

13. Directions: Which of the following
situations can be considered as unlikely to
happen, likely to happen, equally likely to
happen, impossible to happen, or certain to
happen?
Write your answer on the blank before each
number.
S
E
A
T
W
O
R
K

14. 1. Mark is thrifty. He will be
rich someday.
2. When a pupil is absent, he
is sick.
3. People living in the slum
areas are poor.
S
E
A
T
W
O
R
K

15. 4. When the teacher is out,
the class is noisy.
5. Students prefer to have
holidays than school days.
6. Whales live in water, so
they are classified as fish.

16. 7. The sun is the biggest star.
8. When a pupil cleans the room, a
visitor is coming.
9. A frog can live both on land and
in water.
10. When a pupil is attentive in
class, he can answer any questions.

18. A
N
S
W
E
R
K
E
Y
Spinner
1. 4/6 or 2/3 0.67
67%
2. 2/6 or 1/3 0.33
33%
Pair Share
1. 2/11 5. 1/11
2. 2/11 6. 1/11
3. 2/11 7. 1/11

19. A
N
S
W
E
R
K
E
Y
Activity
A. 1. Impossible to happen
2. Equally likely to happen
3. Likely to happen
4. Likely to happen
5. Likely to happen
B.
1. c 2. a 3. d 4. e
5. b

20. A
N
S
W
E
R
K
E
Y
Seatwork
1. Likely to happen 6. Impossible to
happen
2. Likely to happen 7. Impossible to
happen
3. Certain to happen 8. Likely to
happen
4. Likely to happen 9. Certain to
happen
5. Likely to happen 10. Certain to