2.NBT.A.3

Read and write numbers to 1000 using base-ten numerals, number names, and expanded form.

 
20 Lesson(s)
   

Each Number Has a Place: Tens and Ones

2nd Grade Math » Unit: Each Number Has a Place
2nd Grade Math » Unit: Each Number Has a Place
Kristen O'Connor
Pepperell, MA
Environment: Rural
 
Big Idea:

The big idea of this lesson is that the base-ten number system uses models to show numbers. The ones digit represents how many ones, and the tens digit represents how many groups of ten.

 
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screen shot 2013 12 21 at 2 22 35 pm
   

Comparing Numbers Written in Expanded Form

2nd Grade Math » Unit: Comparing Numbers
2nd Grade Math » Unit: Comparing Numbers
Caitlin Vaughan
Environment: Urban
 
Big Idea:

Students take their understanding of place value to the next level when they compare numbers written in expanded form.

 
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Reflections (1)
ra991 f
   

Place Value to Thousands

3rd Grade Math » Unit: Review for Testing
3rd Grade Math » Unit: Review for Testing
Diane Siekmann
Phoenix, AZ
Environment: Urban
 
Big Idea:

This lesson addresses the foundational skill of place value through modeling.

 
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100 dollar
   

Excellent Mathematical Explanations

2nd Grade Math » Unit: Comparing Numbers
2nd Grade Math » Unit: Comparing Numbers
Caitlin Vaughan
Environment: Urban
 
Big Idea:

Students use place value vocabulary to write excellent mathematical explanations about why a comparison statement is true or false.

 
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Resources (18)
 
Reflections (1)
img 0183
   

Moving Along In Hundreds

2nd Grade Math » Unit: Everything In Its Place
2nd Grade Math » Unit: Everything In Its Place
Beth McKenna
York, ME
Environment: Suburban
 
Big Idea:

The Common Core standard is that students understand that the numbers 100, 200, etc. represent so many groups of 100.

 
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100 0617
   

How Big Is One Thousand

2nd Grade Math » Unit: More Complex Numbers and Operations
2nd Grade Math » Unit: More Complex Numbers and Operations
Beth McKenna
York, ME
Environment: Suburban
 
Big Idea:

Students can get a picture of how big 1,000 is as they build and compare 3-digit numbers.

 
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100 1237
   

More than 100

2nd Grade Math » Unit: Place Value
2nd Grade Math » Unit: Place Value
Beth McKenna
York, ME
Environment: Suburban
 
Big Idea:

Understanding numbers above 100 and the patterns that are created will help students build a stronger understanding of larger numbers.

 
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Reflections (1)
screen shot 2014 05 25 at 10 41 37 pm
   

Place Value in Japanese

2nd Grade Math » Unit: Place Value
2nd Grade Math » Unit: Place Value
Beth McKenna
York, ME
Environment: Suburban
 
Big Idea:

Identifying the place value of numbers is an important skill for second grade. Using the Japanese names for numbers allows for a review of place value identification.

 
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Resources (10)
 
Reflections (1)
100 1265
   

Place Value Review

2nd Grade Math » Unit: Place Value
2nd Grade Math » Unit: Place Value
Beth McKenna
York, ME
Environment: Suburban
 
Big Idea:

The word value is often confusing to students. Today's lesson will help to clarify the meaning of the term value.

 
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Reflections (1)
100 1343
   

Put It Together and Take It Apart

2nd Grade Math » Unit: Numbers Have Patterns
2nd Grade Math » Unit: Numbers Have Patterns
Beth McKenna
York, ME
Environment: Suburban
 
Big Idea:

Students increase their understanding of place value by manipulating larger numbers.

 
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Resources (10)
 
Reflections (1)
100 1236
   

The Purpose of Zero

2nd Grade Math » Unit: Money
2nd Grade Math » Unit: Money
Beth McKenna
York, ME
Environment: Suburban
 
Big Idea:

Zero makes a difference, depending on where it is. It may be worth nothing, but it has a special place in numbers.

 
Resources (13)
 
Reflections (1)
images 3
   

Assessment

2nd Grade Math » Unit: More Complex Numbers and Operations
2nd Grade Math » Unit: More Complex Numbers and Operations
Beth McKenna
York, ME
Environment: Suburban
 
Big Idea:

Assessment provides us with a chance to see what children understand and what they still need to work on.

 
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screen shot 2014 05 11 at 10 41 10 pm
   

Moving Into Thousands

2nd Grade Math » Unit: Everything in Its Place
2nd Grade Math » Unit: Everything in Its Place
Beth McKenna
York, ME
Environment: Suburban
 
Big Idea:

To make sense of numbers in the thousands, 2nd grade students need practice identifying place value positions and using place value strategies in numbers to 1,000.

 
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shutterstock 119204635
   

Larger Numbers: A Tie to Social Studies

2nd Grade Math » Unit: Numbers Have Patterns
2nd Grade Math » Unit: Numbers Have Patterns
Beth McKenna
York, ME
Environment: Suburban
 
Big Idea:

I want my students to realize that numbers are everywhere and math is applicable to almost all other subjects. Geography offers a perfect opportunity for students to make this connection.

 
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Resources (10)
 
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100 1065
   

More than 1,000

2nd Grade Math » Unit: Place Value
2nd Grade Math » Unit: Place Value
Beth McKenna
York, ME
Environment: Suburban
 
Big Idea:

In preparation for third grade students are introduced to numbers above 1,000 and how the place values repeat the patterns found in numbers in the hundreds.

 
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Resources (12)
 
Reflections (1)
100 1319
Common Core Math
 
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