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PPT
Curated OER

Subtraction with Base 10 Models

For Teachers 1st - 3rd
Learning how to regroup can be a difficult concept to learn, as well as teach. This PowerPoint does an excellent job at visualizing the process with step-by-step guidelines and base ten animations. There are multiple examples for...
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Lesson Plan
Illustrative Mathematics

The Napping House

For Teachers Pre-K - 1st Standards
How many people and animals can cram into a single bed? Find out with this cross-curricular math and language arts lesson. Following along with a reading of the children's book The Napping House by Audrey Wood, young mathematicians add...
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Lesson Plan
Curated OER

Wallflowers: Adding and Multiplying Integers

For Teachers 8th - 10th
Students solve word problems in which they add, subtract, multiply, and/or divide integers, identify rules and patterns for multiplying and dividing integers, create scenarios that represent each expression, and evaluate expressions.
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Worksheet
Curated OER

Adding and Subtracting

For Students 2nd - 3rd
Adding and subtracting 100 is a breeze once scholars understand the role place value plays in this math process. They examine four examples before adding 100 to 24 numbers and subtracting 100 from 24 more. If you haven't yet covered...
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Worksheet
Curated OER

Critical Thinking Problems

For Students Pre-K - K
Young mathematicians practice their reasoning as well as adding and subtracting skills with this worksheet that includes five simple word problems about birthdays. Learners are give pictures of birthday cakes and based on the number of...
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Lesson Plan
Curated OER

Adding and Subtracting Integers

For Teachers 6th - 7th
Middle schoolers use discs in order to add and subtract integers. There are manipulatives present so kinesthetic learners can access the curriculum. They also review the concept of the opposite of positive and negative numbers.
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Lesson Plan
Curated OER

Math Relay

For Teachers 4th
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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Lesson Plan
Curated OER

Adding and Subtracting Mixed Numbers Lesson Plan

For Teachers 4th - 5th
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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Worksheet
Curated OER

Fraction Test: Mixed Operations

For Students 4th - 5th
In this fractions worksheet, students practice their fractions skills by completing problems. Students complete twenty-five fractions problems. Students add, subtract, multiply, and compare fractions in this worksheet.
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Lesson Plan
Curated OER

Fraction Food Frenzy

For Teachers 3rd - 5th
Young scholars study addition of fractions with like denominators using illustrations and problem solving.
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Worksheet
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Curated OER

Thanksgiving Subtraction: Worksheet 3

For Students 1st - 3rd
Have fun with subtraction during the month of November. This helpful worksheet includes one word problem and nineteen subtraction problems. The word problem is Thanksgiving themed! Answer sheet is included.
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Worksheet
Curated OER

Word Problems

For Students 3rd - 4th
Word problems are sometimes tricky for learners to solve. Use this resource to help your class cement their problem solving, and addition and subtraction skills.
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Interactive
Curated OER

Adding and Subtracting Fractions

For Students 3rd - 5th
In this math worksheet, students add or subtract fractions. Students find common denominators where needed and simplify their answers. Hints are available.
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Lesson Plan
Curated OER

Shipping on the Hudson

For Teachers 3rd - 5th
Students track movements of ships, tugboats, and barges on the Hudson River estuary in order to practice addition and subtraction skills. They solve word problems by reading and interpreting data from a table. They calculate distances...
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Lesson Plan
Curated OER

Jambalaya's Restaurant

For Teachers 6th - 8th
Students use a menu and recipes to work on adding, subtracting, and percentages. They are given they weekly circulators, advertisements, or actual products and students practice figuring out sales tax. Students figure slaes tax and tip...
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Lesson Plan
Curated OER

Writing Number Sentences

For Teachers 6th - 8th
Students practice writing number sentences. After reading real world problems, they describe the same situation by writing a number sentence. Students use algebra tiles, or counters, to demonstrate the use zero pairs in solving...
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Worksheet
Curated OER

Visual Sum and Difference Word Problems

For Students 1st - 2nd
Aside from awkward wording, this worksheet has problems for learners to solve. They read each problem then use the provided pictures to solve. Note: The images and language are misleading on this worksheet and may be confusing for some...
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Interactive
Curated OER

Adding and Subtracting Time

For Students 6th - 8th
In this online math worksheet, students practice adding and subtracting aspects of time. This excellent resource allows the students to check their answers, and to get "hints" should they run into difficulties. A terrific teaching tool!
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Lesson Plan
Curated OER

North vs. South

For Teachers 4th - 6th
Students use information about the Union and Confederate troops to create a bar graph.  In this graphing lesson, students graph troop information on a bar graph, color coding the information.  Students then find the differences between...
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Lesson Plan
Curated OER

Place Values- Subtracting

For Teachers 6th - 8th
Students complete math problems.  In this place values activity, students view examples of how to subtract numbers in specific place values and then complete a worksheet independently.
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Lesson Plan
Curated OER

Adding and Subtracting Bears and Goats

For Teachers 1st
First graders evaluate math problems using farm animals.  In this consumer math lesson, 1st graders discover math problems which concern quantities of farm animals.  Students discover new strategies to help them analyze their information. 
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Worksheet
Curated OER

Amusement Park Basic Word Problems

For Students 1st - 2nd
In this basic math word problem worksheet, students practice their math skills as they solve 4 word problems that require them to add and subtract.
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Worksheet
Curated OER

Choosing Numbers That Make Sense

For Students 3rd - 4th
In this number sense worksheet, students complete each of 4 word problems using decade numbers. They add or subtract to determine the answer to the problem.
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Worksheet
Curated OER

Adding/Subtracting--More Than/Less Than

For Students 2nd - 3rd
In this counting in 10s activity, students look at 10 numbers and write down 10 more for each number. Students look at an additional 10 numbers and write down what is 10 less than in each number.