2 Develop the Concept: Interactive
10–15 min
Overview
Interactive Learning
In this activity, children use ten-frames and counters to make 10 in order to
add 9 and another number.
Essential
Question
How can you make 10 to add 9?
Materials
Double Ten-Frame Mat (Teaching Tool 7, 1 per pair), counters (18 per pair),
number cube numbered 2–7, (1 per pair)
Set the Purpose You have learned how to use ten-frames to add. Today
you will learn how to make 10 to add 9.
Connect What are some things that come in a set? If children have trouble
thinking of ideas, suggest that they think of things at home, in the classroom,
or things they collect. [Sample responses: a carton of eggs; a package of
markers; a stamp set] If one thing from the set is missing, how many do you
have to put back to make a complete set again? [1]
__________
Sample an
9
__5
__
__
3.
FOLD
Place 9 counters on the first ten-frame. Have partners take turns
rolling the number cube to decide on a second number to add to
9. The other partner records the addend. The partners then work
together to make 10 and find the new sum to complete Items 2–4.
How do you know the two sums are the same? [You can count the
counters in both addition sentences. The number of counters does
not change.]
9
__3
__
__
12
swers give
10
n.
2.
__4
__
__
__4
__
__
14
10
__2
__
__
12
9
13
4.
9
__6
__
__
15
eTools Counters
www.pearsonsuccessnet.com
10
__3
__
__
13
10
__5
__
__
15
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Topic 16 •
equal fact
with 10.
Lesson 5
four hundred
How is adding 19 and 7 like
adding 9 and 7? [Sample answer:
Add 1 to 19 to make 20 and
subtract 1 from 7: 20 + 6 = 26]
Lesson
16-5
FOLD
1.
14
Small-Group
Interaction
________
__________
_________
M a k in g 1
0 to A d d
9
Inc.
Distribute a Double Ten-Frame Mat, 18 counters, and a number
cube to each pair. How can you use counters to show 9 ⴙ 5 on your
ten-frames? [Put 9 counters on one ten-frame and 5 on the other.]
How many more counters do you need on the first ten-frame to make
10? [1] If you move 1 counter from the second ten-frame up to the
first ten-frame, how many counters are left below? [4] What addition
sentence does this show? What is the sum? [10 4; 14] Did the
number of counters change? [No] Guide children in recording their
answers in Item 1. [9 5 14; 10 4 14] Which is easier to
add, 9 ⴙ 5 or 10 ⴙ 4? Why? [10 4 is easier because I can just
add the ones to 0.]
Name ____
Education,
Instruct in
Small Steps
Look at the ten-frames on page 497. What’s different about them?
[One has 9 counters, and the other has 10.] How many counters would
you have to add to the first one to make 10? [1]
© Pearson
Pose the
Problem
ninety-seven
497
Link to Investigations,
Second Edition
Joint-Usage Master Plan
Blended Instruction (Plan 1):
Topic 16 and Units 6 and 8
Making a 10 to Add 9 497
28250_497a-500b.indd 2
6/21/07 10:14:28 AM