Transcript Number and Operations

Subtract
Add
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Divide
Maureen Curran and Mary Lou Aalbers
Hazelwood School District
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Teacher Tips
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We suggest that students keep a journal.
It is critical for students to use writing skills to
explain their answers.
Please take time to discuss possible solutions to
problems.
Number Sense
The following lesson is addressing these
standards:
•Use problem-solving approaches to explore
and construct meaning from mathematical
content.
(MO 1.6, 3.4, 3.5, 3.7)
•Extend understanding and ability to apply
whole number operations to all rational
numbers. (MO 3.2, 3.3, 4.1)
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Mary, Amy and Sue plan to go to a
concert on Friday night.
Amy’s father will drive the girls to the
concert so they plan to meet at Amy’s
house.
It usually takes Sue 30 minutes to walk
to Amy’s house, but she decides to ride
her bicycle which takes 1/2 the time.
From Amy’s house, it will
take 40 minutes to drive to
the game.
If the concert starts at 8:30 and the girls
want to be in their seats 30 minutes before
the concert begins, what time will Sue
have to leave her house?
Concert
8:30
In their seats
30 minutes before concert
Car Ride
40 minutes
Bike Ride is 1/2 the 30 minute walk
A. 7:30
B. 7:20
C. 7:05
D. 6:50
7:05
In your journal explain
how you arrived at your
answer.
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