2.NBT.A.2

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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.

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## 2.NBT.A.2

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

19 Lesson(s)

### Before or After

2nd Grade Math »
Unit: Each Number Has a Place

2nd Grade Math »
Unit: Each Number Has a Place

Big Idea:

#### The big idea of this lesson is number pattern recognition and the use of positional words "before" and "after" to describe the location of a number, in relation to other numbers.

Standards:

Favorites
(10)

Resources
(13)

Reflections
(1)

### Go Fishing for Doubles

2nd Grade Math »
Unit: The Mission of Addition

2nd Grade Math »
Unit: The Mission of Addition

### Skip Counting with 5s, 10s and 100s

2nd Grade Math »
Unit: Adding and Subtracting the Basics

2nd Grade Math »
Unit: Adding and Subtracting the Basics

Big Idea:

#### In preparation for multiplication, the Common Core Standards require 2nd grade students fluently skip count by 5’s, 10’s and 100’s.

Standards:

Favorites
(19)

Resources
(13)

Reflections
(2)

### Rain Forest Gems of Biodiversity

2nd Grade Science »
Unit: The Wonderful Biodiversity of Life

2nd Grade Science »
Unit: The Wonderful Biodiversity of Life

Big Idea:

#### "Gems of Biodiversity" is a great visual tool to help children grasp the idea of biodiversity in the rain forest. It can also be used to help the children understand relationships and as a springboard for an exercise in reasoning.

Favorites
(37)

Resources
(31)

Reflections
(1)

### Desert Gems of Biodiversity

2nd Grade Science »
Unit: The Wonderful Biodiversity of Life

2nd Grade Science »
Unit: The Wonderful Biodiversity of Life

Big Idea:

#### "Gems of Biodiversity" is a great visual tool to help children grasp the idea of biodiversity of the desert. It can also be used to help the children understand relationships and as a springboard for an exercise in reasoning.

Favorites
(2)

Resources
(26)

Reflections
(2)

### Moving Along In Hundreds

2nd Grade Math »
Unit: Everything In Its Place

2nd Grade Math »
Unit: Everything In Its Place

### 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

### From Tens to Nines

2nd Grade Math »
Unit: Adding and Subtracting the Basics

2nd Grade Math »
Unit: Adding and Subtracting the Basics

### Coral Reef Gems of Biodiversity

2nd Grade Science »
Unit: The Wonderful Biodiversity of Life

2nd Grade Science »
Unit: The Wonderful Biodiversity of Life

Big Idea:

#### "Gems of Biodiversity" is a great visual tool to help children grasp the idea of biodiversity of coral reefs. It can also be used to help the children understand relationships and as a springboard for an exercise in reasoning.

Favorites
(1)

Resources
(31)

Reflections
(1)

### Skip Counting Patterns

2nd Grade Math »
Unit: Numbers Have Patterns

2nd Grade Math »
Unit: Numbers Have Patterns

### Our Strategies for Result Unknown Problems

2nd Grade Math »
Unit: Three-Digit Addition and Subtraction

2nd Grade Math »
Unit: Three-Digit Addition and Subtraction

### Woodland Gems of Biodiversity

2nd Grade Science »
Unit: The Wonderful Biodiversity of Life

2nd Grade Science »
Unit: The Wonderful Biodiversity of Life

### Making Change

2nd Grade Math »
Unit: Everything in Its Place

2nd Grade Math »
Unit: Everything in Its Place

### More Dimes and Dollars

2nd Grade Math »
Unit: Everything in Its Place

2nd Grade Math »
Unit: Everything in Its Place

Common Core Math

### Kindergarten

### First Grade

### Second Grade

### Third Grade

### Fourth Grade

### Fifth Grade

### Sixth Grade

### Seventh Grade

### HS Number & Quantity

### HS Algebra

### HS Functions

### HS Geometry

### Kindergarten

### First Grade

### Second Grade

### Third Grade

### Fourth Grade

### Fifth Grade

### Sixth Grade

### Seventh Grade

### Eighth Grade

### Ninth and Tenth Grade

### Kindergarten

### First grade

### Second grade

### Third Grade

### Fourth grade

### Fifth grade

### Middle School

Kindergarten

First Grade

Second Grade

Third Grade

Fourth Grade

Fifth Grade

Sixth Grade

Seventh Grade

HS Number & Quantity

HS Algebra

HS Functions

HS Geometry

Kindergarten

First Grade

Second Grade

Third Grade

Fourth Grade

Fifth Grade

Sixth Grade

Seventh Grade

Eighth Grade

Ninth and Tenth Grade

Kindergarten

First grade

Second grade

Third Grade

Fourth grade

Fifth grade

Middle School