Lesson Plan
Probability of Independent and Dependent Events
4/13/09
Goal: To find the probability of independent and dependent events
Prerequisite skills:
1. Students should be able to find the probability of simple events.
2. Students should be able to multiply fractions
Objectives:
1. Students will be able to find the probability of independent and dependent events
2. Students will be able to know the difference between independent and dependent events
Standard(s):
 8-6.4 – Apply procedures to calculate the probability of two dependent events
 8-6.5 – Interpret the probability for two dependent events.
Materials:
 Powerpoint on probability
Technology:
 Promethean Board
Procedures:
Teacher:
1. Fantastic 5 starter. Go over
starter
2. Pull up powerpoint on
probability
3. Ask “What probability
means”
4. Show slide 2 on PP. Let
students copy definitions.
Walk around while they copy.
5. Go over the definition and
example.
Student:
1. Work on starter. Check
answers.
2. Pull out paper to take notes
Time:
15 minutes
7 minutes
3. Answer the questions
“What probability means”
4. Copy definition of
probability.
5. Discuss example with
teacher and copy the example
as you go over it.
6. Go over the next example.
6. Copy and go over next
example.
7. Go to slide 4. Have students 7. Copy definition of
copy definition of Independent independent events. Copy
events. Go over example.
example
8. Go to slide 5 and go over
8. Copy and go over next
the next example.
example
9. Slide 6 – students try
9. Try an example on your
13 minutes
independently.
10. Go over independent
work.
11. Discuss what independent
means in terms of the answers
and in general.
12. Slide 7 – have students
copy definition of dependent
events. Walk around while
they copy.
13. Go over example.
14. Slide 8 – go over another
example.
15. Slide 9 – students try
independently.
16. Go over independent
work.
17. Discuss what dependent
means in terms of the answers
and in general.
18. Slide 10 – compare
independent and dependent
events. Go over with class.
19. Slide 11 – TOD. Then
their homework is Red
workbook p.89 (2-18 evens)
Assessment:
 Class discussion
 TOD
own.
10. Check work.
11. Discuss what independent
means in terms of the answers
and in general.
12. Copy definition of
dependent events.
13 minutes
13. Copy example.
14. Copy and go over another
example.
15. Try an example on your
own.
16. Check work.
17. Discuss what dependent
means in terms of the answers
and in general.
18. Compare independent and
dependent events. Participate
your answers.
19. Complete TOD. When
finished, start on homework.
2-4 minutes
5 minutes