MA19.7.13

Mathematics (2019) Grade(s): 7

MA19.7.13
Use a number from 0 to 1 to represent the probability of a chance event occurring, explaining that larger numbers indicate greater likelihood of the event occurring, while a number near zero indicates an unlikely event.

Unpacked Content

Knowledge

Students know:

probability is equal to the ratio of favorable number of outcomes to total possible number of outcomes.
As a number for probability increases, so does the likelihood of the event occurring.
A probability near 0 indicates an unlikely event.
A probability around 1/2 indicates an event that is neither unlikely nor likely.
A probability near 1 indicates a likely event.

Skills

Students are able to:

approximate the probability of a chance event.
Use words like impossible, very unlikely, unlikely, equally likely/unlikely, likely, very likely, and certain to describe the probabilities of events.

Understanding

Students understand that:

the probability of a chance event is a number between 0 and 1 that expresses the likelihood of the event occurring.
An event that is equally likely or equally unlikely has a probability of about 0.5 or ½.
The sum of the probabilities of an event and its complement must be 1.

Vocabulary

probability
Event
Chance
likely
Unlikely
very unlikely
very likely
Equally likely
Impossible
Certain

Aligned Learning Resources

Find Probability StudyJam

Balancing Act

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