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...
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.
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.
Other
Nearpod: Addition & Subtraction Strategies
In this lesson, students will relate counting to addition and subtraction and will learn several strategies for solving addition and subtraction problems.
CK-12 Foundation
Ck 12: Trigonometry: Applications of Sum and Difference Formulas
[Free Registration/Login may be required to access all resource tools.] Solving equations and verifying identities with the sum and difference formulas.
CK-12 Foundation
Ck 12: Trigonometry: Tangent Sum and Difference Formulas
[Free Registration/Login may be required to access all resource tools.] Here you'll learn to rewrite tangent functions with addition or subtraction in their arguments in a more easily solvable form.
Better Lesson
Better Lesson: Counting Up the Cost!
Fourth graders love to shop! In this exciting instructional activity, 4th graders will discover how to count money using some real world activities. This instructional activity includes a detailed lesson plan, printable worksheets, and a...
NumberNut
Number Nut: Subtraction: 3 Digit Numbers
A brief lesson on subtracting from three-digit numbers that includes detailed examples, rules, and further explanation of borrowing.
Illustrative Mathematics
Illustrative Mathematics: 1.oa \$20 Dot Map
In this lesson plan, 1st graders are given a graphic of a map and are to use addition and subtraction to solve the word problem.
Illustrative Mathematics
Illustrative Mathematics: 1.oa Sharing Markers
In this lesson plan students are to answer word problems using addition or subtraction within 20.
Illustrative Mathematics
Illustrative Mathematics: 1.oa the Pet Snake
This complete lesson plan has students solve word problems using addition and subtraction within 20.
Illustrative Mathematics
Illustrative Mathematics: 1.oa Maria's Marbles
This lesson plans has students solve word problems about marbles using addition or subtraction within 20.
Better Lesson
Better Lesson: Put It Together and Take It Apart
Second graders increase their understanding of place value by manipulating larger numbers.
US Department of Education
Helping Your Child Learn Math: Math in the Home
An excellent compilation of activities that engage parents and children in math explorations at home. Detailed lessons covering a wide range of math topics such as fractions, measurements, money, data collection, and math in newspapers....
Purple Math
Purplemath: Adding & Subtracting Rational Expressions: Introduction
Finding common denominators is no problem with Purplemath. Use this lesson to learn how to add and subtract rational expressions with these great examples.
NumberNut
Number Nut: Comparing Operations
Combine all of your knowledge about the four basic operations in this lesson that focuses on comparing operations. Discover the relationship between of each operation and key vocabulary terms to build your number sense.