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Addition and subtraction

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Addition and Subtraction

- Lesson plan -

Solve addition and subtraction problems, including word problems involving two-and-three digit numbers. Complete in addition and subtraction sentence with missing addends including inverse relationships between and addition and subtraction.

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One more or one less

- Activity -

Look at the items. Add one (or subtract one) and write down that number.

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Number Bonds

- Activity -

Students learn how to partition numbers.

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Place Value Chart: With Decimal Numbers

- Activity -

Formatting numbers for decimals. Students will learn to understand the place value of every number.

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Addition & Subtraction

- Lesson plan -

Develop and analyze strategies for adding and subtracting numbers.

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Estimation

- Lesson plan -

Estimate sums and differences.

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Bus Sum - phase 1

- Activity -

Teach students the meaning of adding and subtracting.

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Add & Subtract Decimals

- Lesson plan -

Add and subtract decimals to solve problems. Solve problems involving money.

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Twin Numbers - Introduction

- Lesson plan -

Practice twin numbers up to 20.

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Judging Reasonable Answers

- Lesson plan -

Students will estimate to judge if answers are reasonable in addition, subtraction, division, and multiplication problems.

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Add & Subtract Fractions

- Lesson plan -

Develop fluency with addition and subtraction of non-negative rational numbers with unlike denominators.

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Bead Necklace

- Activity -

A clear and simple bead necklace.

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Adding & Subtraction Fractions with Unlike Denominators

- Lesson plan -

Use fraction models to add and subtract fractions with unlike denominators, and progressing to solve addition and subtraction problems without modeling.

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Doubling and Halving

- Lesson plan -

Students use addition, subtraction, doubling and halving to solve story problems.

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Adding & Subtracting Decimals

- Lesson plan -

Add and subtract decimals, with instruction and practice targeted at correctly organizing numbers to avoid typical computational errors.

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Number Line with Decimals

- Activity -

Identifying and placing numbers and/or decimals.

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