229
MATHEMATICS 5 CURRICULUM GUIDE 2015
Suggested Assessment Strategies
Resources/Notes
DIVISION
General Outcome: Develop Number Sense
Authorized Resource
Performance
•
Ask students to use base ten blocks to model 252 shared equally
among seven groups. They could then represent their answer using
labelled diagrams and a number sentence.
(5N6.2)
•
Students could use Kidspiration® software
to model and explore
various division questions with virtual base ten manipulatives. The
software will allow students to explain their step by step reasoning.
(5N6.2)
•
Ask students to use base ten blocks to solve:
Each trailer can carry 4 horses. If there are 308 horses to be
moved, how many trailers would be needed?
(5N6.2)
Suggested Resource
• Resource Link: https://www.
k12pl.nl.ca/curr/k-6/math/
grade-5/links/unit9
-Kidspiration®
Math Focus 5
Lesson 3: Dividing Tens and
Hundreds
TR: pp. 21-24
SB: pp. 304-306
Math Game:
Choose Four
TR: pp. 25-26
SB: p. 307
Lesson 7: Dividing by Sharing
TR: pp. 45-49
SB: pp. 318-321
230
MATHEMATICS 5 CURRICULUM GUIDE 2015
Specific Outcomes
DIVISION
Suggestions for Teaching and Learning
Students will be expected to:
Number
5N6 Continued...
Achievement Indicators:
5N6.2 (Continued) Model the
division process as equal sharing,
using base ten blocks, and record
it symbolically.
5N6.1 (Continued) Students
investigate a variety of strategies
and become proficient in at least
one appropriate and efficient
division strategy that they
understand.
Sometimes a number does not divide evenly into the number of groups
specified and there will be a remainder. Students should understand
why the number of units left over after the sharing must be less than
the divisor. This can be demonstrated using models so that students can
realize that if there are more
left over than the divisor, there is enough to
give each group another equal share; e.g., if there are 6 blocks left over
but the divisor is 4, each of the 4 groups can get another block (an equal
share) and the actual remainder is 2.
5N6.3 Explain that the
interpretation of a remainder
depends on the context:
• ignore the remainder
• round up the quotient
• express remainders as a
fraction or decimal
Students must understand and be able to express remainders
symbolically. There are many ways to interpret remainders. They can be
expressed as:
• whole numbers where it is ignored - 882 marbles shared among
4 children, 882 ÷ 4 = 220 R2, because even if there are 2
marbles
left over, each child still gets 220 marbles. Contexts in which you
ignore the remainder involve items that cannot be expressed other
than as a whole; e.g., marbles, cards, etc.
• round up the quotient - 260 children with 7 children per van. How
many vans are required? 260 ÷ 7 = 37 R1. There are 38 vans needed.
• decimals - $19.00 shared equally among 4 people is 19 ÷ 4 = 4 R3
which is $4.75
• fractions - 100 oranges shared between 8 people, 100 ÷ 8 = 12 R4
which is 12 1/2 oranges each. Contexts in which the remainder is
expressed as a fraction involve items that
can be expressed as less
than a whole; e.g., metres, pizzas, cakes, etc.