Lesson Plan
Illustrative Mathematics

Illustrative Mathematics: 1.oa \$20 Dot Map

For Teachers 1st
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.
Lesson Plan
Illustrative Mathematics

Illustrative Mathematics: 1.oa Sharing Markers

For Teachers 1st
In this lesson plan students are to answer word problems using addition or subtraction within 20.
Lesson Plan
Illustrative Mathematics

Illustrative Mathematics: 1.oa the Pet Snake

For Teachers 1st
This complete lesson plan has students solve word problems using addition and subtraction within 20.
Lesson Plan
Illustrative Mathematics

Illustrative Mathematics: 1.oa School Supplies

For Teachers 1st
This is a complete lesson that has students solving word problems using addition and subtraction within 20.
Unit Plan
CK-12 Foundation

Ck 12: Elem Math: Adding and Subtracting Numbers Up to 20 Word Problems

For Students 1st - 2nd Standards
[Free Registration/Login may be required to access all resource tools.] The video describes how to solve word problems using both addition and subtraction. The video is followed by additional practice problems.
Unit Plan
CK-12 Foundation

Ck 12: Elem Math: Challenge Flow Chart Numbers to 1000

For Students 2nd - 4th
[Free Registration/Login may be required to access all resource tools.] The video shows how to answer a series of addition or subtraction problems with numbers up to 1,000. The video is followed by practice problems.
Lesson Plan
Illustrative Mathematics

Illustrative Mathematics: 1.oa Valid Equalities?

For Teachers 1st Standards
This lesson plans allows students to explore the meaning of the equal sign in addition and subtraction problems.
Lesson Plan
Illustrative Mathematics

Illustrative Mathematics: Finding a Chair

For Teachers 1st - 2nd
This lesson includes a series of questions that can be posed by the teacher to the whole class which revolves around addition and subtraction.
Lesson Plan
Illustrative Mathematics

Illustrative Mathematics: Boys and Girls, Variation 1

For Teachers 1st - 2nd Standards
This word problem focuses on the Put Together/Take Apart contexts for addition and subtraction. Young scholars may use objects, pictures, or equations to represent their solutions. Examples and explanations are provided.
Activity
Education.com

Education.com: k.oa.a.1 Worksheets

For Students K Standards
[Free Registration/Login Required] Choose from a variety of worksheets which help students practice addition and subtraction with objects, fingers, mental images, and drawings.
Lesson Plan
Illustrative Mathematics

Illustrative Mathematics: 1.oa Maria's Marbles

For Teachers 1st
This lesson plans has students solve word problems about marbles using addition or subtraction within 20.
Interactive
ABCya

Ab Cya: Math Man Jr.

For Students K - 1st Standards
Math Man Jr. is an elementary activity to practice addition and subtraction math facts. Solve math problems and avoid the ghosts! Fun for children of all ages!
Unit Plan
CK-12 Foundation

Ck 12: Elem Math: Mixed Operations Selecting the Correct Sentence

For Students 2nd - 4th Standards
[Free Registration/Login may be required to access all resource tools.] The video shows how to add and subtract three digit numbers to determine which number sentence matches the correct solution. The video is followed by a series of...
Unit Plan
CK-12 Foundation

Ck 12: Elem Math: Mixed Operations Selecting the Incorrect Sentence

For Students 2nd - 4th
[Free Registration/Login may be required to access all resource tools.] The video shows how to add and subtract three digit numbers with two operations in a number sentence to determine which number sentence does not match the correct...
Unit Plan
CK-12 Foundation

Ck 12: Elem Math: Adding Two Digit Numbers Without Regrouping

For Students 1st - 2nd Standards
[Free Registration/Login may be required to access all resource tools.] The video describes how to solve a 2-digit addition problem without regrouping. The video is followed by practice problems.
Interactive
Mangahigh

Mangahigh: Ice, Ice, Maybe: Fast Estimation With Basic Number Calculations

For Students 4th - 7th
Practice your arithmetic skills as you estimate the answer to questions involving addition, subtraction, multiplication, and division. Includes whole numbers, fractions, and percents. As you answer questions, you guide penguins across an...
Unit Plan
Paul Dawkins

Paul's Online Notes: Algebra: Combining Functions

For Students 9th - 10th Standards
Detailed math tutorial features notes and examples that take a look at combining functions using addition, subtraction, multiplication, and division. It also discusses function composition. Includes practice and assignment problems.
Unit Plan
Department of Defense

Do Dea: Algebra 1: Semester 1: Equations

For Students 9th - 10th
A learning module through which students learn about equations including the following: Translating words into equations and equations into words, The Properties of Equality to help solving equations, Techniques for solving simple...
Unknown Type
Math Drills

Math Drills: Halloween Math Worksheets

For Students Pre-K - 1st
Download these free worksheets to sharpen your math skills. These Halloween math worksheets focus on topics such as multiplication, division, addition, subtraction, number patterns, counting, ordering, probability, and measurement.
Unit Plan
Khan Academy

Khan Academy: Solve Problems With Picture Graphs 1

For Students K - 1st Standards
Read and interpret picture graphs. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a tutorial video, or receive hints.
Unit Plan
Khan Academy

Khan Academy: One Step Addition & Subtraction Equations

For Students 5th - 7th
Practice solving equations in one step by adding or subtracting the same value from both sides. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Unknown Type
Khan Academy

Khan Academy: Take Apart

For Students Pre-K - 1st
In this exercise, students practice subtraction by using visuals to take numbers apart. Students receive immediate feedback and have the opportunity to get hints and try questions repeatedly.
Unknown Type
Varsity Tutors

Varsity Tutors: Hotmath: Practice Problems: Solving One Step Equations

For Students 9th - 10th Standards
Twenty-five problems present a variety of practice solving one-step equations with addition and subtraction. They are given with each step to the solution cleverly revealed one at a time. You can work each step of the problem then click...
Interactive
Other

Crick Primary School: Mathematical Puzzles

For Students Pre-K - 1st
The resource consists of 378,028 math puzzles available in three different levels. Students use multiplication, division, addition, and subtraction skills to solve the puzzles. The puzzles can be solved online or downloaded as a PDF file.

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