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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 School Supplies
This is a complete lesson that has students solving word problems using addition and subtraction within 20.
CK-12 Foundation
Ck 12: Elem Math: Adding and Subtracting Numbers Up to 20 Word Problems
[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.
CK-12 Foundation
Ck 12: Elem Math: Challenge Flow Chart Numbers to 1000
[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.
Illustrative Mathematics
Illustrative Mathematics: 1.oa Valid Equalities?
This lesson plans allows students to explore the meaning of the equal sign in addition and subtraction problems.
Illustrative Mathematics
Illustrative Mathematics: Finding a Chair
This lesson includes a series of questions that can be posed by the teacher to the whole class which revolves around addition and subtraction.
Illustrative Mathematics
Illustrative Mathematics: Boys and Girls, Variation 1
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.
Education.com
Education.com: k.oa.a.1 Worksheets
[Free Registration/Login Required] Choose from a variety of worksheets which help students practice addition and subtraction with objects, fingers, mental images, and drawings.
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.
ABCya
Ab Cya: Math Man Jr.
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!
CK-12 Foundation
Ck 12: Elem Math: Mixed Operations Selecting the Correct Sentence
[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...
CK-12 Foundation
Ck 12: Elem Math: Mixed Operations Selecting the Incorrect Sentence
[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...
CK-12 Foundation
Ck 12: Elem Math: Adding Two Digit Numbers Without Regrouping
[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.
Mangahigh
Mangahigh: Ice, Ice, Maybe: Fast Estimation With Basic Number Calculations
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...
Paul Dawkins
Paul's Online Notes: Algebra: Combining Functions
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.
Department of Defense
Do Dea: Algebra 1: Semester 1: Equations
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...
Math Drills
Math Drills: Halloween Math Worksheets
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.
Khan Academy
Khan Academy: Solve Problems With Picture Graphs 1
Read and interpret picture graphs. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a tutorial video, or receive hints.
Khan Academy
Khan Academy: One Step Addition & Subtraction Equations
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.
Khan Academy
Khan Academy: Take Apart
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.
Varsity Tutors
Varsity Tutors: Hotmath: Practice Problems: Solving One Step Equations
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...
Other
Crick Primary School: Mathematical Puzzles
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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