Transcript 100 Chart - EvergreenStateCollege-Home

100 Chart
EALRS & GLES
• EALR 1: The student understands and applies the concepts and
procedures of mathematics.
– Component 1.1: Understand and apply concepts and
procedures from number sense.
– GLE 1.1.2: Understand sequential relationships among whole
numbers to at least 100.
– GLE 1.1.5: Understand the meaning of addition and subtraction
and how they relate to one another.
– GLE 1.1.7: Understand and apply strategies and appropriate
tools for adding and subtracting with whole numbers. (Use
calculator, manipulatives, or paper and pencil to solve addition or
subtraction problems.)
Think of Some Ways We Can
Count To 100?
Lesson Overview
• Learn how the 100 chart works
• Investigate skip counting by 2’s, 5’s, and
10’s
• Explore number patterns on the 100 chart
Locating Numbers
• I’m thinking of a number that is 1 more than 32.
• I’m thinking of a number that is 2 less than 70.
• I’m thinking of a number that is 10 more than 90.
• I’m thinking of a number that is 2 tens and 5 ones.
Skip Counting By 2’s Up To 40
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100
What are some patterns you notice?
Would we cover the number 52 if we continued counting by 2’s?
Would we cover the number 76?
What about 85?
Skip Counting By 5’s Up to 50
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100
• What are some patterns you notice?
Skip Counting By 10’s Up to 100
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2
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100
• What are some patterns you notice?
• How many 10’s does it take to equal 100?
Targeting Numbers on the 100 Chart
Target Number: 25
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One less than 25
One more than 25
Ten less than 25
Ten more than 25
24
26
15
35
14
15
16
24
25
26
34
35
36
Questions
• What do you notice when we move to the left on the 100 chart?
– Numbers get smaller
– Subtracting
• What do you notice when we move to the right on the 100 chart?
– Numbers get bigger
– Addition
• What do you notice when we move up one row?
– The second digit is the same
– Subtracting
• What do you notice when we move down one row?
– The second digit is the same
– Addition
Lets Try Some More
Target Number: 22
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One less than 22
One more than 22
Ten less than 22
Ten more than 22
21
23
12
32
11 12 12
21 22 23
31 32 33
Find the Missing Numbers
Target Number: 36
36
Reference
• “The 100 Chart”. In Math Trailblazers: A Mathematical Journey
Using Science and Language Arts. (296-299). Dubuque, IA:
Kendall/Hunt Publishing.