Curated OER
What's That Number? 1-Digit Addition and Subtraction
In this subtraction and addition worksheet, students fill in missing numbers in problems necessary to arrive at given answers. All problems use 1-digit numbers only.
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the Whale Game
Students listen to whale stories and answer addition and subtraction problems in the stories. In this addition and subtraction lesson, students receive 20 goldfish. Based on the story they eat the goldfish. Students write number...
Curated OER
Number Lines and Bead Strings
Students solve addition and subtraction problems using strings of beads and number lines. They mentally perform addition and subtraction problems, and write and solve story problems involving whole numbers.
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Number and Operations: Webbing Our Way Through Numbers
Second graders explore estimation and place value. In this place value instructional activity, 2nd graders estimate and construct numbers while working with spider activities. Students use addition and subtraction to compare estimates....
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A Sum of Functions
Collaborative learners will see the geometric addition of functions by graphing the sum of two graphed curves on the same coordinate plane. This task then naturally flows into giving learners the algebraic representation of the curves...
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Make a Match
Second graders examine the relationship between addition and subtraction. In this number sense lesson, 2nd graders practice their computation skills and use various strategies (including manipulatives and calculators) to add and subtract.
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Addition and Subtraction
Students complete addition and subtraction activities. In this addition and subtraction lesson, students write a sum with missing numbers or symbols and use parts of their bodies to show the missing symbol or number. Students guess...
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Subtraction Game
Second graders participate in a math game that allows the students to practice their subtraction skills. They recall the basic addition and subtraction facts when they play their math game with dice, a playing board and counters to solve...
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Addition and Subtraction Facts To 20
First graders use manipulatives, flash cards, number sentences and story problems to practice their addition and subtraction facts to twenty.
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M & M Addition
Eat your math manipulatives, are you serious? Yup, Learners listen to the story The M & M's Addition book, add single digit numbers to reach sums up to six, and demonstrate addition and subtraction number combinations using several...
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Two-Digit Addition and Subtraction (B)
For this adding and subtracting two-digit numbers worksheet, learners find the sums using mixed regrouping and no regrouping. Students solve 49 problems.
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Two-Digit Addition and Subtraction No Regrouping (B)
In this adding and subtracting two-digit numbers worksheet, students find the sums and differences with no regrouping. Students solve 36 problems.
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Three-Digit Addition and Subtraction (A)
In this adding and subtracting three-digit numbers worksheet, learners solve with mixed regrouping and no regrouping. Students solve 49 problems.
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Book Title: You Can’t Buy a Dinosaur with a Dime
Students explore the concepts of multiple digit addition and subtraction. In this addition and subtraction lesson, students read the book You Can’t Buy a Dinosaur with a Dime and then discuss methods for solving a particular math problem...
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Butterfly Addition: Color by Numbers
Children learning to add numbers up to 11 develop the strategy of using the larger number as the first addend and counting on from there to find a sum. They define addition and review the meaning of the plus (+) symbol. To practice, they...
Curated OER
The Weight of Primates
Second graders practice their problem solving skills. In this addition and subtraction skills lesson, 2nd graders solve word problems that require them to find differences and sums. This lesson features the use of a video titled "Blossom...
Alabama Learning Exchange
"Like Terms", I Add Them
Ninth graders add and subtract polynomials. In this Algebra I lesson plan, 9th graders work practice problems as they view a PowerPoint presentation of the lesson plan. Both the horizontal and vertical methods of addition and...
Curated OER
Understanding Whole Numbers
In this understanding whole numbers worksheet, 4th graders use a computer program for instruction, then answer 16 problems about addition and subtraction.
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Arithmetic: Fractions and Percentages
Young mathematicians review the basic operations needed for addition and subtraction of fractions. They review the rules for addition and subtraction of fractions with the same denominator, how to change them if the denominators are...
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Comparing Apples With Apples 1
Elementary schoolers observe and demonstrate how to add and subtract fractions with like denominators. They observe the teacher model a variety of fraction addition and subtraction problems and use fraction strips to complete a worksheet.
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Problem Solvers
Fifth and sixth graders compare decimals to the place-value structure in the base-ten number system. They represent fractions as parts of unit wholes, as parts of a set, as locations on a number line, and as divisions of whole numbers....
Curated OER
Fraction City
Welcome to Fraction City! This is an incredibly interactive and fun way to teach properties of fractions, and reaches multiple learning styles. Scholars create "blocks" by folding strips of paper in various increments (thirds, fourths,...
Curated OER
Addition and Subtraction
Students develop their own strategies to solve basic addition and subtraction facts. In this addition and subtraction lesson plan, students use strategies they already know and new ones to solve problems.
Curated OER
Addition and Subtraction Facts to 20
Students act out computation problems. In this addition and subtraction lesson, students act out an addition story and write an addition sentence for it. Students continue this activity and answer the provided questions.
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