Cool Math
Coolmath: Coolmath4kids: Lessons
A large collection of tutorials covering concepts in addition, subtraction, multiplication, division, and fractions.
Teachnology
Teachnology: Addition and Subtraction Teaching Theme
Addition and Subtraction Math Theme provides an excellent collection of free sample worksheets, teacher resources, lesson plans and interactive media to support addition and subtraction skills.
Better Lesson
Better Lesson: Unknown Addend Problem
Students will solve word problems to create their own subtraction number sentences. They will use known addition facts to solve subtraction problems. A detailed lesson plan, worksheet, and pictures/videos of the instructional activity...
Better Lesson
Better Lesson: Working With Larger Numbers
Explore subtraction and addition but having student collect data from rolling objects. This instructional activity has students adding and subtracting numbers they collected using strategies used in class. Use the document and video...
ClassFlow
Class Flow: K Addition and Subtraction Lesson
[Free Registration/Login Required] This flipchart contains vocabulary, strategies and various activities for K-1 Addition and Subtraction.
Student Achievement Partners
Illustrative Mathematics: Addition and Subtraction Fluency Set of Tasks [Pdf]
Students explore the relationship between addition and subtraction and develop an understanding of decomposing numbers in different ways in this first-grade lesson plan.
SMART Technologies
Smart: 65 Addition/subtraction Story Problems
Students may compare, join, separate numbers to solve these story problems. These are the tougher kinds of problems! There are also some of the more traditional, "easier" part/part/whole type of story problems here, as well.
Lesson Tutor
Lesson Tutor: Fraction Addition and Subtraction Lesson
This site is an online lesson plan of how to correctly add and subtract fractions is provided here. Many examples of the processes are worked out and the solutions provided. An elementary teacher looking for some useful advice and...
Illustrative Mathematics
Illustrative Mathematics: 1.oa Link Cube Addition
This complete lesson plan has students answer word problems using addition and subtraction within 20.
Other
Nearpod: Addition & Subtraction Within 20
In this lesson on addition and subtraction within 20, 1st graders learn how to solve addition and subtraction story problems by finding clue words. Adding three addends is also taught in this lesson.
CK-12 Foundation
Ck 12: Algebra: Inequalities With Addition and Subtraction
[Free Registration/Login may be required to access all resource tools.] Learn how to solve one-step inequalities using addition and subtraction.
Scholastic
Scholastic: Study Jams! Math: Addition & Subtraction: Properties of Addition
Sing a song, practice step by step and assess your knowledge on the properties of addition with this interactive lesson.
Teachnology
Teachnology: Arithmetic Theme
Arithmetic Theme provides an excellent collection of free sample worksheets, teacher resources, lesson plans and interactive media to support addition, subtraction, multiplication and division.
Teachnology
Teachnology: Arithmetic Theme
Arithmetic Theme provides an excellent collection of free sample worksheets, teacher resources, lesson plans and interactive media to support addition, subtraction, multiplication and division.
CK-12 Foundation
Ck 12: Algebra: Addition and Subtraction of Polynomials
[Free Registration/Login may be required to access all resource tools.] In this lesson students add and subtract polynomial expressions and simplify polynomials by combining like terms. Students can watch a video tutorial, explore guided...
Better Lesson
Better Lesson: Solving Subtraction Number Stories in Space
Students will be able to solve subtraction word problems using objects.
Better Lesson
Better Lesson: Solving Subtraction Number Stories Writing the Answer Lesson Plan
Students will be able to solve subtraction word problems using objects and write a numeral for the solution.
CK-12 Foundation
Ck 12: Algebra: Linear Systems With Addition or Subtraction
[Free Registration/Login may be required to access all resource tools.] Solve systems of equations by addition or subtraction.
Math.com
Math.com: Equations and Inequalities: Addition & Subtraction Equations
Learners review how to solve algebraic equations using addition and subtraction. The tutorial consists of notes, examples, and practice exercises.
CK-12 Foundation
Ck 12: Algebra: Addition and Subtraction of Polynomials
[Free Registration/Login may be required to access all resource tools.] In this lesson students learn to add and subtract polynomials. Students can watch a video tutorial, explore guided notes and attempt practice problems.
Lawrence Hall of Science
The Math Page: Skill in Arithmetic: The Meaning of Subtraction, and Mental Calculation
This website explains and defines basic subtraction. There are practice problems at the very end of this lesson.
Better Lesson
Better Lesson: Smoothing Out Subtraction
Second graders demonstrate comfort with addition, but show less ease with subtraction. Repeated practice with subtraction is necessary to build fluency.
CK-12 Foundation
Ck 12: Arithmetic: Subtraction of Rational Numbers
[Free Registration/Login may be required to access all resource tools.] In this lesson, students learn how to subtract rational numbers. Students examine guided notes, review guided practice, watch instructional videos and attempt...
Alabama Learning Exchange
Alex: A Math and Language Arts Lesson: Division
The lesson will help students develop an initial understanding of division and clarify how the four operations of addition, subtraction, multiplication, and division relate to and are separate from each other. The lesson begins with a...