Math K - 7 IRP Statistics and Probability (Chance and Uncertainty)

Students use experimental or theoretical probability to represent and solve problems involving uncertainty.

It is expected that students will:

Grades K to 1 Grades 2 to 3 Grade 4
Describe concepts of chance and chance events using ordinary vocabulary

Use simple experiments designed by others to illustrate and explain probability and chance

Conduct simple probability experiments to explain outcomes

  • predict the chance of an event happening using the terms never, sometimes, and always
  • describe the likeliness of an outcome using terms such as likely, unlikely, fair chance, probable, and expected
  • conduct a probability experiment, choose an appropriate recording method, and draw conclusions and make predictions from the results
  • identify an outcome using the terms possible, impossible, certain, or uncertain
  • compare outcomes using the terms equally, likely, more likely, or less likely
  • design and conduct experiments to answer their own questions


It is expected that students will:

Grade 5 Grade 6 Grade 7
Predict outcomes, conduct experiments, and communicate the probability of single events Use numbers to communicate the probability of single events from experiments and models

Create and solve problems using probability

  • list all possible outcomes of an event
  • explain events using the vocabulary of probability
  • best/worst
  • probable/improbable
  • never/less likely/equally likely
  • likely/more likely/always
  • conduct probability experiments and explain the results using the vocabulary of probability
  • conduct probability experiments to demonstrate that results are not influenced by factors such as the age, experience, or skill of the participant
  • distinguish between the experimental and theoretical probability of single events
  • using various polyhedrons as dice, identify the relationship between the number of faces and the probability of a single event
  • calculate theoretical probability using numbers between 0 and 1
  • demonstrate that different outcomes may occur when the same experiment is repeated
  • compare experimental results with theoretical results
  • use a table to identify all possible outcomes of two independent events
  • use simulation or experimentation to solve probability problems
  • create and solve problems using the definition of probability as favourable outcomes over total outcomes

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Maintained by: Mathematics Coordinator

Revised: October 20, 1997

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