CK-12 Foundation
Simplify Sums or Differences of Single Variable Expressions: Addition and Subtraction of Like Terms
Investigate the process of combining like terms using an interactive animation. Scholars tackle simplifying expressions by manipulating rectangles that represent the terms. They add and subtract terms to arrive at the result.
Captain Planet Foundation
Help a Sister Out: Garden Companions
Explore Native American gardening traditions with a lesson on companion planting. Based on the concept that certain crops grow better when planted near other specific crops, kids research the gardening method with background links and by...
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Calculators
Students investigate the four basic operations of mathematics that are addition, subtraction, multiplication, and division. The use of a technology game is part of the lesson. They demonstrate the proper use of a calculator as part of...
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Basic Mathematical Operations Using Math Tiles
Practice addition, subtraction, multiplication, and division using tiles as manipulatives. In this math operations lesson plan, young learners choose the appropriate sized tiles, arrange them according to directions given by the teacher,...
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Functions
Fifth graders explore mathematics functions. In this functions lesson, 5th graders explore 1 and 2-step functions involving addition, subtraction, multiplication, and division. Students also practice solving problems that their...
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Math In Everyday Life
Second and third graders solve word problems involving both time and money. First the class works together to solve basic addition, subtraction, multiplication, and simple fraction problems (these examples are provided). After solving...
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Fraction Food Frenzy
Students study addition of fractions with like denominators using illustrations and problem solving.
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Add or Subtract Whole Numbers Up to 1000
Elementary schoolers solve practice problems on the board and are shown how to line up the numbers for addition. They solve various addition problems in small groups. Everyone continues the same process for solving subtraction problems.
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Math Relay
This is really a math review for older elementary learners to practice making equations using adding, subtracting, multiplying, and dividing in a fun way. They get to move around and play with hula hoops, bean bags, balls, and jump...
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Problem Solving
Scholars will learn to solve word problems using addition, subtraction, multiplication or division. Using a grocery store theme, they will identify the best way to solve real-life problems. There are many ways this basic lesson can be...
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Three-Digit Addition and Subtraction With Regrouping
Second graders access prior knowledge of addition and subtraction using two-digit numbers and calculate easily with them. In this three-digit addition instructional activity, 2nd graders learn to add and subtract three-digit numbers with...
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Inverse Relationship Between Addition and subtraction
First graders review number facts to illustrate the relationship between addition and subtraction. In this inverse relationship lesson, 1st graders write an addition sentence and then invert the numbers to show the subtraction fact.
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Solve Time and Money Word Problems in Everyday Life
Fourth graders solve real life problems involving time and money. They write their own math word problems. Students use addition, subtraction, multiplication and fractions to solve math problems.
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How Much?
It's time to go back over all that your class has learned about decimals, fractions, and percentages! To do so, individuals solve story problems that involve addition, subtraction, multiplication, and division with decimals, explain how...
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Number Sentences
Fifth graders become familiar with problem solving strategies of guess and check and working backwards. They demonstrate the basic concepts of addition, subtraction, multiplication, and division using a math sentence.
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Subtraction Shopping
Learners subtract two digit numbers. They check each other's answers for accuracy.
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Combining Integers
Seventh graders explore the concept of adding and subtracting integers. In this adding and subtracting integers lesson, 7th graders use white and red beans to demonstrate adding and subtracting integers. Students play an on-line game...
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Check Subtraction with Addition
For this subtraction worksheet, students subtract, then check by adding. Problems are set up side by side, with the correct answer to the addition check noted for the student.
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Solve Addition and Subtraction Equations
In this solving addition and subtractions equations practice worksheet, learners sharpen their problem solving skills as they solve 6 story problems.
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Investigation - Who is Right?
Third graders explore mathematics by solving problems in groups. In this math functions lesson plan, 3rd graders demonstrate their understanding of addition and subtraction by completing two digit math problems. Students define a list of...
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Boxes of Patterns- Following the Rule in Addition and Subtraction Patterns
In this addition and subtraction pattern enrichment instructional activity, 2nd graders follow the given rule to fill in the pattern boxes. They examine the patterns as they add and subtract with two digit numbers, and write a sentence...
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Tear + Net = Gross
Second graders find the net weight of a grocery item by weighing it with the tear. In this weight measurement lesson, 2nd graders bring in cans of food and watch a video about weight measurement. Students review the meanings of gross,...
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Adding and Subtracting Mixed Numbers Lesson Plan
Students investigate fractions while adding and subtracting mixed numbers. They discuss how to add and subtract mixed numbers and they practice working with mixed numbers. They complete a worksheet while working with mixed numbers.
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Conditional Probability and Probability of Simultaneous Events
Students explore the concept of conditional probability and probability of simultaneous events. In this conditional probability and probability of simultaneous events lesson, students roll dice or use and applet to roll dice to determine...