2.NBT.B.6

Add up to four two-digit numbers using strategies based on place value and properties of operations.

 
34 Lesson(s)
   

Domino Addition: Understanding the Part/Part/Whole Relationship

2nd Grade Math » Unit: Addition and Subtraction Basic Training
2nd Grade Math » Unit: Addition and Subtraction Basic Training
Kristen O'Connor
Pepperell, MA
Environment: Rural
 
Big Idea:

The big idea of this lesson is the understanding that addition can be represented as parts of a whole and that we can use addition sentences to represent those parts.

 
Favorites (19)
 
Resources (20)
 
Reflections (1)
part part whole
   

Partners Make Ten

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

This lesson builds a foundation for adding larger numbers which is supported by the Common Core standards for second grade..

 
Favorites (7)
 
Resources (11)
 
Reflections (1)
images
   

Finding the Right Place!

2nd Grade Math » Unit: Numbers & Operation in Base Ten Grade 2
2nd Grade Math » Unit: Numbers & Operation in Base Ten Grade 2
Carol Redfield
Jackson, MS
Environment: Urban
 
Big Idea:

Students use numbers, base-ten models, and real-word pictures to examine ways to place numbers in their correct place.

 
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Resources (17)
 
Reflections (1)
right place
   

Identifying Tens and Ones

2nd Grade Math » Unit: Numbers & Operation in Base Ten Grade 2
2nd Grade Math » Unit: Numbers & Operation in Base Ten Grade 2
Carol Redfield
Jackson, MS
Environment: Urban
 
Big Idea:

Students will be given set amount of money to add, and identify how many tens and ones.

 
Favorites (26)
 
Resources (13)
 
Reflections (1)
tens chart pic
   

Mentally Speaking!

2nd Grade Math » Unit: Numbers & Operation in Base Ten Grade 2
2nd Grade Math » Unit: Numbers & Operation in Base Ten Grade 2
Carol Redfield
Jackson, MS
Environment: Urban
 
Big Idea:

Using base ten blocks and place value, students explore how to become more fluent in adding and subtracting two-digit numbers without regrouping.

 
Favorites (33)
 
Resources (13)
 
Reflections (1)
mental image
   

Applying The Basics!

2nd Grade Math » Unit: Numbers & Operation in Base Ten Grade 2
2nd Grade Math » Unit: Numbers & Operation in Base Ten Grade 2
Carol Redfield
Jackson, MS
Environment: Urban
 
Big Idea:

Using base-ten materials and place-value skills, students gain a better understanding of how to add and subtract numbers.

 
Favorites (28)
 
Resources (17)
 
Reflections (1)
basics
   

Abracadabra

2nd Grade Math » Unit: Numbers & Operation in Base Ten Grade 2
2nd Grade Math » Unit: Numbers & Operation in Base Ten Grade 2
Carol Redfield
Jackson, MS
Environment: Urban
 
Big Idea:

Students will be able to explain using concrete objects, pictures and words (oral or written) why addition or subtraction strategies work.

 
Favorites (25)
 
Resources (22)
 
Reflections (3)
majic
   

Introduction to Four Addends

2nd Grade Math » Unit: Adding Four Addends
2nd Grade Math » Unit: Adding Four Addends
Caitlin Vaughan
Environment: Urban
 
Big Idea:

In this lesson, students identify strategies to add four two-digit numbers together.

 
Favorites (8)
 
Resources (16)
 
Reflections (1)
img 0156
   

Tallying it Up

2nd Grade Math » Unit: Numbers & Operation in Base Ten Grade 2
2nd Grade Math » Unit: Numbers & Operation in Base Ten Grade 2
Carol Redfield
Jackson, MS
Environment: Urban
 
Big Idea:

In this collaborative lesson students will use "Head, or Tails" to learn how to tally count by fives and add on left over numbers.

 
Favorites (13)
 
Resources (16)
 
Reflections (1)
images 4
   

Keep On Doing!

2nd Grade Math » Unit: Numbers & Operation in Base Ten Grade 2
2nd Grade Math » Unit: Numbers & Operation in Base Ten Grade 2
Carol Redfield
Jackson, MS
Environment: Urban
 
Big Idea:

In this lesson, students will explore how the use of base tens, and place value can be used to help them explain and solve addition word problems.

 
Favorites (25)
 
Resources (14)
 
Reflections (1)
learning
   

Manipulation Central

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:

Not everyone solves a problem in the same way. Reinforcing that different strategies can be used effectively is the goal of this lesson.

 
Favorites (3)
 
Resources (10)
 
Reflections (1)
screen shot 2014 04 23 at 2 33 13 pm
   

What's in Your Zoo?

2nd Grade Math » Unit: Numbers & Operation in Base Ten Grade 2
2nd Grade Math » Unit: Numbers & Operation in Base Ten Grade 2
Carol Redfield
Jackson, MS
Environment: Urban
 
Big Idea:

In this lesson, students will create pictures using base ten blocks as models for numbers between 200 and 1000.

 
Favorites (31)
 
Resources (21)
 
Reflections (1)
tiger
   

10, 20, 100 Day 2

1st Grade Math » Unit: Complements of 10 and 20
1st Grade Math » Unit: Complements of 10 and 20
Thomas Young
Waitsfield, VT
Environment: Suburban
 
Big Idea:

Students will use dice to roll a number and then find the complement to make 10, 20 or 100.

 
Favorites (1)
 
Resources (15)
 
Reflections (1)
lesson image
   

A Suitcase of Math Strategies

2nd Grade Math » Unit: The Numbers Are Getting Bigger
2nd Grade Math » Unit: The Numbers Are Getting Bigger
Beth McKenna
York, ME
Environment: Suburban
 
Big Idea:

What better way to think of all the strategies that you can use in math, than to pack a suitcase full of them. Students love the idea of filling a suitcase with math tools.

 
Favorites (3)
 
Resources (11)
 
Reflections (1)
images 2
   

My Special Strategies

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

Do you know which strategies work for you? Lets make sure you know which ones those are.

 
Favorites (2)
 
Resources (10)
 
Reflections (1)
images
Common Core Math
 
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