Mathematics 5 curriculum guide 2015 I table of contents acknowledgements

Certain 
Possible 
Unlikely 
Likely 
Less Likely 

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MATHEMATICS 5 CURRICULUM GUIDE 2015
Suggested Assessment Strategies
Resources/Notes
PROBABILITY
General Outcome: Use Experimental or Theoretical Probabilities to Represent and 
Solve Problems Involving Uncertainty.
Authorized Resource
Paper and Pencil
• Given a paper bag containing 10 coloured tiles (five red, two blue, 
one yellow, two green), ask students to describe and explain a choice 
event that is:
(i) more likely (ii) equally likely (iii) less likely to occur
(5SP4.1)
• Ask students to consider this friendly talk probe:
Three sisters were walking to school:
Beth: 
Mom said she is cleaning out the freezer after school. She said 
she would give us each an ice cream treat to help make more space. 
What kind do you think we will get?
Olivia:
She bought a box of treats yesterday that had eight drumsticks 
and eight polar bars.
Liza: 
I saw four empty drumstick wrappers in the garbage can this 
morning. You know drumsticks are Dad’s favourite.
Olivia:

I think it is equally likely that we will get a drumstick or a 
polar bar because Mom bought eight of both.
Beth: 
I think we are more likely to get a polar bar than a drumstick 
because a lot of the drumsticks are already gone.
Liza:
I think it’s less likely that we will get a polar bar or a drumstick 
than a popsicle. Popsicles are my favourite.
Which sister do you agree with most? Explain.
(5SP4.1)
Journal
• Ask students to respond to this prompt: In a bag with 10 red 
cubes, five green and four yellow, why is it less likely that a yellow 
cube will be drawn than a red or green one?
(5SP4.1)
Math Focus 5
Lesson 4: Comparing Probabilities
TR: pp. 30-34
SB: pp. 350-353