Model Decimals With Base-10 Blocks Page 5
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7Teaching Master
Name
Date
Time
Use the line plot to have children identify the maximum,
LESSON
Line Plot
5 7
minimum, range, and mode of the hand-span data. Next, find the
Answers vary.
median measurement of class hand spans by having children cross
off an X from each end of the line plot one after another until one
or two remain.
Math Boxes 5 7
INDEPENDENT
ACTIVITY
(Math Journal 1, p. 116)
Mixed Practice Math Boxes in this lesson are paired with
Math Boxes in Lesson 5-5. The skill in Problem 6
previews Unit 6 content.
INDEPENDENT
Home Link 5 7
ACTIVITY
(Math Masters, p. 139)
Home Connection Children write fractions and decimals
Math Masters, p. 166A
naming the shaded parts of square grids. They use the
grids to compare the decimals. They also color grids and
EM3MM_G3_U05_119-166.indd 166A
1/25/11 12:45 PM
use them to order decimals from smallest to largest.
3
Differentiation Options
SMALL-GROUP
READINESS
ACTIVITY
Exploring Equivalent
15–30 Min
Names for Coins
Student Page
(Math Masters, pp. 426 and 427)
Date
Time
To provide experience with decimals using a concrete model, have
LESSON
Math Boxes
5 7
children arrange 100 pennies on the 10-by-10 grid. Ask:
1.
Solve.
2.
For the number 5,749,862
Unit
40,000
the 4 means
●
How many dollars are on your grid?
One dollar
5,000,000
25
the 5 means
16 + 9 =
800
106
the 8 means
●
16 + 90 =
How many pennies are on your grid?
100 pennies
700,000
916
the 7 means
16 + 900 =
9,000
9,016
1
_
the 9 means
●
16 + 9,000 =
What part of a dollar is a penny?
of a dollar
100
90,016
18–21
16 + 90,000 =
●
Write one penny in decimal notation on your slate.
$0.01
3.
What is another name for 3 dollar
4.
Solve using any
Unit
bills and 6 pennies? Fill in the circle
method you wish.
for the best answer.
Children count their pennies using calculators. Have them share
199
+ 499
A $3.60
698
their ideas about what they need to enter into the calculator to
B $3.06
count the hundredths of a dollar.
Casio key sequence: 0.01 [+] [+]
C $30.60
0 [=] [=] ...
D 3.06¢
35
60–63
5.
6.
Use a straightedge. Draw a 7-sided
Write a division story by filling in
TI key sequence: 0.01 [+] [=] [=] ...
chairs
polygon.
the blanks. There are 48 _______
chairs
in 6 rows. How many _______
Sample answer:
They choral count as the calculator counts up: one hundredth,
8
are in each row? _______
two hundredths, and so on.
Write a number model.
48 ÷ 6 = 8
250–253
102–105
260
Math Journal 1, p. 116
EM3cuG3MJ1_U05_102-127.indd 116
12/30/10 5:49 PM
356
Unit 5 Place Value in Whole Numbers and Decimals
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