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- 2.NBT.A.1Understand that the three digits of a three-digit number represent amounts of hundreds, tens, and ones; e.g., 706 equals 7 hundreds, 0 tens, and 6 ones. Understand the following as special cases:
- 2.NBT.A.2Count within 1000; skip-count by 5s, 10s, and 100s.
- 2.NBT.A.3Read and write numbers to 1000 using base-ten numerals, number names, and expanded form.
- 2.NBT.A.4Compare two three-digit numbers based on meanings of the hundreds, tens, and ones digits, using >, =, and < symbols to record the results of comparisons.

Less Than or Greater Than

2nd Grade Math

» Unit:

Each Number Has a Place

Big Idea:The big idea of this lesson is that students can use their knowledge of place value to compare numbers and order them based upon their value.

Comparing Numbers Written in Expanded Form

2nd Grade Math

» Unit:

Comparing Numbers

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

Finding the Right Place!

2nd Grade Math

» Unit:

Numbers & Operation in Base Ten Grade 2

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

Comparing Three Digit Numbers

2nd Grade Math

» Unit:

Comparing Numbers

Big Idea:Students use their knowledge of place value to compare three digit numbers.

Identifying Tens and Ones

2nd Grade Math

» Unit:

Numbers & Operation in Base Ten Grade 2

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

Is the Statement True or False?

2nd Grade Math

» Unit:

Comparing Numbers

Big Idea:Students use their knowledge of place value to determine whether a comparison statement is true or false.

Mentally Speaking!

2nd Grade Math

» Unit:

Numbers & Operation in Base Ten Grade 2

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.

Excellent Mathematical Explanations

2nd Grade Math

» Unit:

Comparing Numbers

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

Applying The Basics!

2nd Grade Math

» Unit:

Numbers & Operation in Base Ten Grade 2

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

Abracadabra

2nd Grade Math

» Unit:

Numbers & Operation in Base Ten Grade 2

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

Tallying it Up

2nd Grade Math

» Unit:

Numbers & Operation in Base Ten Grade 2

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.

How Big Is One Thousand

2nd Grade Math

» Unit:

More Complex Numbers and Operations

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

Balancing Equations and Counting Backwards

2nd Grade Math

» Unit:

Adding and Subtracting the Basics

Big Idea:The Common Core standards for second grade include being able to add and subtract with in 100. Students need practice with finding the solution even if it is not the answer that is missing.

Keep On Doing!

2nd Grade Math

» Unit:

Numbers & Operation in Base Ten Grade 2

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.

What's in Your Zoo?

2nd Grade Math

» Unit:

Numbers & Operation in Base Ten Grade 2

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

2.NBT.A.1

Understand that the three digits of a three-digit number represent amounts of hundreds, tens, and ones; e.g., 706 equals 7 hundreds, 0 tens, and 6 ones. Understand the following as special cases:

2.NBT.A.2

Count within 1000; skip-count by 5s, 10s, and 100s.

2.NBT.A.3

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

2.NBT.A.4

Compare two three-digit numbers based on meanings of the hundreds, tens, and ones digits, using >, =, and < symbols to record the results of comparisons.