

 Activity   
Students learn the value of numbers. Ones up to a billion. 

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 Activity   
A machine to calculate all kinds of sums. 

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 Lesson plan   
Use spinners to practice math 

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 Lesson plan   
Solve addition and subtraction problems, including word problems involving twoandthree digit numbers. Complete in addition and subtraction sentence with missing addends including inverse relationships between and addition and subtraction. 

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 Lesson plan   
Practice twin numbers up to 20. 

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 Activity   
Identifying and placing numbers and/or decimals. 

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

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 Activity   
Learn how to translate English phrases into algebraic expressions. 

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 Lesson plan   
Add and subtract integers in reallife situations including temperature, bank account balances and sea level. 

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 Lesson plan   
Develop fluency with addition and subtraction of nonnegative rational numbers with unlike denominators. 

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 Activity   
A clear and simple bead necklace. 

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 Lesson plan   
Add and subtract rational numbers including negative fractions. Use absolute value to solve addition and subtraction problems. 

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 Lesson plan   
Estimate sums and differences. 

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 Activity   
Teach students the meaning of adding and subtracting. 

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