Transcript Document 7749862

SCO B4: Students will be expected
to divide 2, 3 – and 4 – numbers by
single-digit divisors and investigate
division by 2 – digit divisors.
Student Activities: An Introduction

Give a situation when you use division.
 This is your VISION OF DIVISION.
 Did you know that there are 6 visions of
division?
 Examine the problems on each of the pages
to follow and figure out what vision of
division is being used.
The Visions of Division

Examine the story problems presented by
the teacher to try to discover the Visions of
Division.
The Visions of Division

Area
 Average
 How many groups
 Rate
 Sharing
 Combination
Identify the Vision of Division for the Word Problems
presented by the teacher
WORD PROBLEM
 The
area of a plot of land is 453 square
metres. If the plot is 3 metres long, ABOUT
how wide is the plot?
 Now calculate the exact width of the plot.
Use Base-10 materials to find the answer.
 What VISION OF DIVISION is used in this
problem?
WORD PROBLEM:
The Key Questions
 HOW MANY ARE
IN EACH GROUP?
 HOW MANY ARE USED UP?
 HOW MANY ARE LEFT?
WORD PROBLEM
 There
are 356 bags of healthy snacks placed
into four large cartons. ABOUT how many
bags would be in each box?
 How many bags would be in each box? Use
Base-10 materials to find the answer.
 What VISION OF DIVISION is used in this
problem?
WORD PROBLEM
 There
are 568 tulip bulbs. They are
packaged in sets of 5. ABOUT how many
packages could be made from the bulbs you
have?
 How many packages could be made? Use
Base-10 materials to find the answer.
 What VISION OF DIVISION is used in this
problem?
Practise Some More!
 465
shared into 3 groups
 4 539 divided by 4
 The quotient of 624 and 7
 Find the other factor: 349 ÷ 5
 4 281 items with 4 in each group. How
many groups?
WORD PROBLEM
 869
items are placed in 20 boxes. How
many items would be placed in each box?
Use an estimation strategy to get your
answer?
 How can what you just did help if there are
21 boxes instead of 20 boxes?
 Find an estimate of 2713 ÷ 31.
Practise Some More!
 459
shared into 10 groups
 786 divided by 20
 The estimated quotient of 624 and 22
 An estimated quotient for 9 118 ÷ 16
 653 items with 30 in each group. How many
groups?
Student Activities

B4.1
 Use Base-10 blocks to model how to divide
489 by 7.
 Practise: Use Base-10 blocks to model how
to divide 869 by 4.
 Roll a die three times in order to build a 3digit number. Now roll a fourth time to get
the divisor. Find the quotient.
Student Activities

B4.2
 Fill in the boxes in the template below so
that:
– No digit is used more than once
– There is no remainder
– The resulting division sentence is correct
Student Activities

B4.3
 Fill in the blanks in the template below to
make the division sentence true.
6
4
3
Student Activities

B4.4
 What division problem is being modeled in
the picture shown to you by the teacher?
 Create a word problem that would be solved
by this model.
 Practise with more models.
Student Activities

B4.5
 612 students in a school are being bussed to
a museum. The law states that a maximum
of 45 students is allowed on each bus.
Estimate how many buses will be needed.
 Now calculate how many buses will be
needed.
Student Activities

B4.6
 Look at the sample word problems below. Talk about
the remainder? Can it be ignored? Is part of the answer?
Or is rounded up?
– A person has 78 cents. Pens cost 19 cents each. How many
pens can the person buy?
– 126 people need to be transported. Twelve passengers can
travel in each van. How many vans are needed?
– 75 metres of ribbon are to be shared among 10 students to
make crafts. How much ribbon will each student get?

What Vision of Division is used in each question?
Student Activities

B4.6 Continued
 Create word problems involving division by
a 2-digit number for each of the following
situations:
– The remainder is ignored
– The remainder is rounded up
– The remainder is part of the answer
“Wow, I just learned the most exciting things about the
division. I can hardly wait to call all of my friends!”