Grade: 6th grade



Probability Lesson

Plan

Grade: 6th grade

Lesson Prerequisites and Preassessment of students:

To complete the Probability Lesson students will need to know how to reduce simple factions.

Lesson Objective(s)

• Apply math skills to solve problems.

• Students will learn and use the following mathematical vocabulary equally likely outcomes, event, and probability of an event.

District Outcomes and/or State/National Standard(s)

North Carolina Standard Course of Study

Competency Goal 4: The learner will understand and determine probabilities.

4.02 Use a sample space to determine the probability of an event.

4.04 Determine and compare experimental and theoretical probabilities for simple and compound events.

Materials

Students:

• Paper

• Pencil or pen

Teacher:

• A wheel with 10 colored sections, which represents equally likely outcomes.

• The wheel needs to have three pink sections.

Adaptations

To accommodate the needs for the deaf student the teacher will need to meet with his or her signer prior to teaching the lesson. During the meeting, explain what the students will be doing during the lesson. Make sure the signer understands what is being asked of the student to ensure the student will fully understand what he or she will be expected to complete

Gearing Up To gear the lesson towards the advanced learners allow them to express the probabilities as fractions, decimals, and percents.

Gearing Down To gear the lesson towards the low learners have them draw a diagram of the total number of outcomes and color the number of favorable events for each problem.

Reference: Chapter 11

Lesson 11-1 Probability

Launch:

To begin the Probability Lesson to the students:

If a coin is tossed once, there are two possible outcomes: heads or tails. An outcome is the result of an action. Outcomes that have the same chance of occurring are called equally likely outcomes.

Suppose you spin the pointer on the wheel once. If the arrow is equally likely to land on any of the 10 sections, the spin is random.

An event is an outcome or group of outcomes. The pointer landing on blue is an event.

The probability of an event is a number that describes how likely it is that the event will occur. For the spinner, the probability of “pink” is 3 out of 10, or 3/10. The probability of “not pink” is 7 out of 10.

Number of favorable outcomes

The probability of an event = ---------------------------------------------------

Total number of outcomes

You can write P (event) for the phrase “probability of an event”

Investigation:

A sixth grade class at Mount Pleasant Elementary made 73 of the 100 Stop Smoking Posters.

A.) Find the probability that a randomly selected poster was made by the sixth grade class. Write the answer as a fraction, decimal, and percentage.

Answer: 73/100, 0.73, and 73%

Summarize:

Today we learned about probability. How do you find the probability of an event? The students’ answers should be similar to divide the number of favorable outcomes by the number of possible outcomes.

Assessment:

As a summative assignment, listen closely to the students’ answers to the question: How do you find the probability of an event? If the students cannot answer the question, start the next day with reteaching probability with different examples such as dice. [pic]

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