Topicm6ba6553dcb10f462_1528449000663_0Topic

ProbabilityprobabilityProbability of a random event

Levelm6ba6553dcb10f462_1528449084556_0Level

Second

Core curriculumm6ba6553dcb10f462_1528449076687_0Core curriculum

XII. Introduction to combinatorics and probabilityprobabilityprobability. The student:

1) identifies sets of objects, analyses and calculates how many object of given properties are there, in cases that do not require applying rules of multiplication or addition;

2) makes simple experiments, like flipping the coin, rolling a six‑sided dice, rolling many‑sided dice and drawing a sphere from a set of spheres, analyses them and calculates probability of events in experiments.

Timingm6ba6553dcb10f462_1528449068082_0Timing

45 minutes

General objectivem6ba6553dcb10f462_1528449523725_0General objective

Using mathematical objects, interpreting mathematical concepts.

Specific objectivesm6ba6553dcb10f462_1528449552113_0Specific objectives

1. Calculating probabilityprobabilityprobability of events in experiments.

2. Communicating in English, developing basic mathematical, computer and scientific competences, developing learning skills.

Learning outcomesm6ba6553dcb10f462_1528450430307_0Learning outcomes

The student:

- calculates probabilityprobabilityprobability of events in experiments.

Methodsm6ba6553dcb10f462_1528449534267_0Methods

1. Discussion.

2. Situational analysis.

Forms of workm6ba6553dcb10f462_1528449514617_0Forms of work

1. Individual work.

2. Group work.

Lesson stages

Introductionm6ba6553dcb10f462_1528450127855_0Introduction

At home, students search available knowledge sources (films, animations, educational materials) for information about experiments, elementary events and finding probabilityprobabilityprobability of elementary events.

Procedurem6ba6553dcb10f462_1528446435040_0Procedure

Representatives of the class chosen by the teacher shortly discuss results of their research.

After learning the content of multimedia resources, students make notes to systemise their knowledge.

Task
Students work individually, using computers. Their task is to observe results of flipping the coin.

[Illustration internative]

Information to remember:

- An experiment/a trial – any procedure that has a well‑defined set of possible outcomes. An experiment can be flipping the coin.
- An elementary event is one possible outcome of an experiment. In case of flipping the coin it can be getting heads or getting tails.
- A set of elementary events is a set of all possible outcomes of the experiment (getting heads or getting tails).
- The chances of getting heads or getting tails is also called the probability of getting heads or getting tails.
- The probability of getting heads (tails) is 12 because there is one possibility that we will get heads (tails) for two possible outcomes of the flipping.
m6ba6553dcb10f462_1527752263647_0- An experiment/a trial – any procedure that has a well‑defined set of possible outcomes. An experiment can be flipping the coin.
- An elementary event is one possible outcome of an experiment. In case of flipping the coin it can be getting heads or getting tails.
- A set of elementary events is a set of all possible outcomes of the experiment (getting heads or getting tails).
- The chances of getting heads or getting tails is also called the probability of getting heads or getting tails.
- The probability of getting heads (tails) is 12 because there is one possibility that we will get heads (tails) for two possible outcomes of the flipping.

The teacher divides students into groups.

Each group gets a set of exercises to do. A group that correctly solves the given exercise, can go on to the next one.

Task
We throw a six‑sided dice. What is the probabilityprobabilityprobability of:

a) getting a numbernumbernumber smaller than 4,
b) getting a number that can be divided by 3,
c) getting a numbernumbernumber that is a prime numberprime numberprime number.

Task
We flip two coins at the same time. Write the set of all possible elementary events of this experimentexperiment / trialexperiment. What is the probability of getting two heads?

Task
What is the probability that while flipping the coin twice, we get at least one tails?m6ba6553dcb10f462_1527752256679_0What is the probability that while flipping the coin twice, we get at least one tails?

Task
The experimentexperiment / trialexperiment is flipping the coin three times. Write the set of all possible outcomes of this experimentexperiment / trialexperiment. Underline the outcome in which we get exactly two heads. What is the probabilityprobabilityprobability of this event?

The teacher sums‑up students’ work. Three groups that did exercises in the shortest time obtain highest marks.

An extra task:
We throw a six‑sided dice three times. What is the probabilityprobabilityprobability of getting the same numbernumbernumber on both dices?

Lesson summarym6ba6553dcb10f462_1528450119332_0Lesson summary

Students do the revision exercises.

Then together they sum‑up the classes, by formulating the conclusions to memorise.

- An experiment/a trial – any procedure that has a well‑defined set of possible outcomes. An experiment can be flipping the coin.
- An elementary event is one possible outcome of an experiment. In case of flipping the coin it can be getting heads or getting tails.
- A set of elementary events is a set of all possible outcomes of the experiment (getting heads or getting tails).
- The chances of getting heads or getting tails is also called the probability of getting heads or getting tails.
- The probability of getting heads (tails) is 12 because there is one possibility that we will get heads (tails) for two possible outcomes of the flipping.
m6ba6553dcb10f462_1527752263647_0- An experiment/a trial – any procedure that has a well‑defined set of possible outcomes. An experiment can be flipping the coin.
- An elementary event is one possible outcome of an experiment. In case of flipping the coin it can be getting heads or getting tails.
- A set of elementary events is a set of all possible outcomes of the experiment (getting heads or getting tails).
- The chances of getting heads or getting tails is also called the probability of getting heads or getting tails.
- The probability of getting heads (tails) is 12 because there is one possibility that we will get heads (tails) for two possible outcomes of the flipping.

Selected words and expressions used in the lesson plan

elementary eventelementary eventelementary event

experiment / trialexperiment / trialexperiment / trial

flip of the coinflip of the coinflip of the coin

numbernumbernumber

number that can be divided by threenumber that can be divided by threenumber that can be divided by three

prime numberprime numberprime number

probabilityprobabilityprobability

probability of an eventprobability of an eventprobability of an event

roll of a diceroll of a diceroll of a dice

set of elementary eventsset of elementary eventsset of elementary events

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probability1
probability

prawdopodobieństwo

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wymowa w języku angielskim: probability
number1
number

liczba

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wymowa w języku angielskim: number
prime number1
prime number

liczba pierwsza

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wymowa w języku angielskim: prime number
experiment / trial1
experiment / trial

doświadczenie losowe

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wymowa w języku angielskim: experiment / trial
elementary event1
elementary event

zdarzenie elementarne

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wymowa w języku angielskim: elementary event
flip of the coin1
flip of the coin

rzut monetą

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wymowa w języku angielskim: flip of the coin
number that can be divided by three1
number that can be divided by three

liczba podzielna przez trzy

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wymowa w języku angielskim: number that can be divided by three
probability of an event1
probability of an event

prawdopodobieństwo zdarzenia losowego

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wymowa w języku angielskim: probability of an event
roll of a dice1
roll of a dice

rzut kostką

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wymowa w języku angielskim: roll of a dice
set of elementary events1
set of elementary events

zbiór zdarzeń elementarnych

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wymowa w języku angielskim: set of elementary events