This 2 unit of number and operations lessons explores more multi-digit addition and subtraction equations through 7 hands-on activities and 9 worksheets.

This lesson is for grades 1-2 on math. At Home Learning Lessons are a partnership between the North Carolina Department of Public Instruction, PBS North Carolina, and the William and Ida Friday Institute for Educational Innovation. Each lesson contains a video instructional lesson, a PDF lesson plan with a transcript, and a PDF file of extension activities.

In this assessment task, students solve a problem using numbers, an equation and explaining their thinking.

Every item of data that we store and transmit has extra bits added to it to prevent errors. Can you find the error and correct it?

In this Khan Academy interactive, students will add a two-digit number and a one-digit number.

Learn to use place value to solve subtraction problems within 100 in this interactive, basketball-themed tutorial.

This unit was created by the Rethink Education Content Development Team. This course is aligned to the NC Standards for 2nd Grade Math.

In this challenging instructional task students relate addition and subtraction problems to money and to situations and goals related to saving money.

To introduce economics, students study why scarcity necessitates choice. They analyze the benefits and costs of using resources in order to make sound decisions. Students continue to learn more about the world around them by examining how the exchange of goods and services by individuals from different countries creates interdependence. Students will understand that documents and artifacts give us information about the past. They practice the skills of gathering historical data, and examining, analyzing, and interpreting these data.

This is a blended unit based on Unit 3 of the second grade Everyday Math series.

This unit will focus on strategies for solving subtraction problems within 20.  Students will learn strategies including: counting up and back on a open number line, using their knowledge of addition/subtraction facts within 10 to solve larger problems, and using doubles facts to solve subtraction problems.  This unit builds on the last unit as students lean on their addition knowledge to help with subtraction. The big goal is for students to develop fluency with subtraction facts within 20.

This is a blended unit based on Unit 2 of the second grade Everyday Math curriculum.

In this unit students will review addition and subtraction strategies introduced in first grade as well as be introduced to new addition strategies to work towards a year-long goal of adding fluently within 100.  Students will master new addition strategies by receiving small group instruction, playing math games, and working on practice problems (both online and in their math journals.)

Students will demonstrate fluency with addition, within 100, by flexibly using strategies based on place value. Students will also solve problems involving dollars.

In this assessment task, students look at how two students set-up a problem. Students will also solve both problems and explain their thinking.

In this assessment task, students solve a word problem using a numbers, an equation, and a number line diagram.

For this assessment task, students solve a word problem using numbers, an equation, and a number line diagram.

This resource is part of Tools4NCTeachers.

In this lesson, students will be figuring out the addends that add up to the correct sums. They will also be creating and solving equations with more than two addends.

This resource is from Tools4NCTeachers.  In this lesson, students will be figuring out the addends that add up to the correct sums.  They will also be creating and solving equations with more than two addends.Extension and differentiation ideas are provided.

This resource is part of Tools4NCTeachers.

In this lesson, students are introduced to the beaded number line as a tool to help them solve addition and subtraction problems within 20. This lesson is in two parts and may be taught over more than one day.

In this lesson, students create arrays to solve a problem within a real-life context and write repeated addition equations that represent the arrays they have created.