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Module 3 Lesson 1
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Meter Strip Subtraction
Rules: Drag your finger from zero to the number I say. Then subtract 10 from the amount. 50cm. 85cm. 49cm.
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Meter Strip Subtraction
Rules: Drag your finger from zero to the number I say. Then subtract 20 from the amount. 65cm. 32cm. 78cm.
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Skip Count Up and Down Skip count by fives starting with zero
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Skip Count Up and Down Skip count by fives starting with zero 00 60
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Today you will learn to count ones, tens, and hundreds by bundling
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The next slides are a review of the Teacher Activity of Bundling
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How many straws do you think there might be?
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How can we group these to find the amount?
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Why is it easier to count by 10’s than 2’s,and 5’s?
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How many groups of ten will we need to make 100?
10 tens makes 100
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Let’s count our tens 1 ten 2 ten 3 ten 4 ten 5 ten 6 ten 7 ten 8 ten
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Let’s count our tens by 10’s
20 30 40 50 60 70 80 90 100
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Review What is the value of 10 tens? 100 or 1 hundred
How many straws equal 1 ten? 10 straws How many hundreds equal 1,000? 10 hundreds
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Review 10 = 1 ten 100 = 10 tens 1000 = 100 tens
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Place Value Hundreds tens Ones Each number has its own place value
When you group things in bundles od hundreds and tens you might have some left over, so they need to be placed in the right unit Hundreds tens Ones
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Place Value Thousands Hundreds Tens Ones Which unit is the smallest?
Which unit is the biggest? Thousands Hundreds Tens Ones
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3 2 4 Place Value Hundreds Tens Ones
Sometimes its hard to count using thousands of straws on your desk So what can we do to show value in the units without having so many straws? Draw them What is the value of this number? Hundreds Tens Ones
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Let’s try some more Hundreds Tens Ones
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Let’s try some more Hundreds Tens Ones
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Let’s try some more Hundreds Tens Ones
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