B2.8 Show simple multiplicative relationships involving whole-number rates, using a variety of tools and drawings.
Activity 1: Which is the Best Deal?
Present the following scenario to students:
Which situation is the best deal?
- 5 croissants for $15
- 10 croissants for $20
- 25 croissants for $25
Ask them to explore it with a partner.
Pair pairs so that students present their ideas and reasoning to the other pair.
Facilitate a math exchange based on the various arguments raised by the students.
Activity 2: Bicycling
With your bicycle, you can travel 12 km in 1 hour.
How many kilometers do you cover in 2, 4, 5 and 10 hours?
If you had to cycle 144 km, how many hours would it take you?