Chance (Probability) · B5 Mathematics

Lesson notes

Learning Objectives

Indicator: B5.4.2.1.3 - Conduct a given probability experiment a number of times, recording the outcomes, and explaining the results.

By the end of the lesson, learners can:

Conduct a coin-tossing experiment at least 20 times and accurately record each outcome using tally marks.
Organize recorded outcomes into a simple frequency table showing heads and tails.
Compare the number of heads and tails obtained and state which outcome occurred more often.
Explain in their own words why the results of repeated trials may differ from their predictions.
Use the results of their experiment to describe the likelihood of getting a head or tail as possible, and explain why neither outcome is impossible or certain.

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Curriculum details

Strand: Data (Strand 4)
Sub-strand: Chance (Probability) (4.2)
Content standard: B5.4.2.1 - Describe the likelihood of a single outcome occurring using words such as impossible, possible, and certain
Indicator: B5.4.2.1.3 - Conduct a given probability experiment a number of times, recording the outcomes, and explaining the results.
Suggested placement: Term 3, Week 12 (Week 36 of the year)
Our suggestion, laid out in curriculum order across three terms of twelve weeks. NaCCA does not fix the week, so follow your school's scheme of learning.
Curriculum reference: Mathematics Curriculum for Primary Schools (Basic 4-6), 2019, p. 112
Transcribed from the official NaCCA publication. Check this page against the source.

Exemplars (from the NaCCA curriculum)

E.g. Ask 5 learners of their expectations/predictions about the outcome of tossing a coin three times. Teacher tosses a coin three times and records the outcome. (e.g. head, head, tail) Does the outcome match their expectation? Either way the teacher should explain. In pairs, learners should repeat the experiment several times, record the outcomes and compare the number of heads turning up