Explanation

About the Math, Learning Targets, and Rigor

The standard calls for students to count within 1,000. This means that students are expected to “count on” from any number and say the next few numbers that come afterwards.

Examples

• What are the next 3 numbers after 498? 499, 500, 501.
• When you count back from 201, what are the first 3 numbers that you say? 200, 199, 198.

This standard also introduces skip counting by 5s and 100s. (Students are introduced to skip counting by 10s in 1st Grade.) They need to understand that counting by 2s, 5s and 10s is counting groups of items by that amount.

Students should explore the patterns of numbers when they skip count.

Examples

• When skip counting by 5s, the ones digit alternates between 5 and 0.
• When skip counting by 100s, the hundreds digit is the only digit that changes, and it increases by one number.

Students need many opportunities counting (up to 1000) from different starting points.

Examples

• Skip count by 5s from 28.
• Skip count by 10s from 89.
• Skip count by 100s from 313.

Note: The use of the 100s chart may be helpful for students to identify the counting patterns. However the ultimate goal for second graders is to be able to count in multiple ways with no visual support.

Resources

Videos

• TEACHING VIDEO - coming soon
• Khan Academy
  • scroll to find 2.NBT.2, click on a skill, watch videos on left side in each skill
• Learn Zillion

EngageNY Lessons

Extra Practice

• North Carolina Tasks
• Illustrative Math Tasks
• Howard County Tasks
  • Click on 2nd grade at bottom, then 2.NBT.2
• Common Core Sheets

Released Assessment Questions

2.NBT.2 Student Example

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