In this lesson, one of a multi-part unit from Illuminations, students practice addition facts in a concentration-game format using dominoes. Then, they gener... More ...

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How Many More Fish? (Kindergarten - 2nd Grade)

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In this seven-lesson unit, from Illuminations, students focus on comparative subtraction. Students use fish-shaped crackers to explore all five meanings for ... More ...

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Balancing Equations (Kindergarten - 2nd Grade)

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This lesson, one of a multi-part unit from Illuminations, encourages students to explore another meaning for operations of subtraction, the balance. This mea... More ...

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How Many More Fish? Looking Back and Moving Forward (Kindergarten - 2nd Grade)

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In this lesson, one of a multi-part unit from Illuminations, students use the mathematical knowledge and skills developed in the previous lessons as they pla... More ...

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Comparing Columns on a Bar Graph (Kindergarten - 2nd Grade)

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In this lesson, one of a multi-part unit from Illuminations, students apply what they know about comparison subtraction by constructing bar graphs and using ... More ...

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Comparing Connecting Cubes: Looking Back and Moving Forward (Kindergarten - 2nd Grade)

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This lesson, one of a multi-part unit from Illuminations, reviews the work of the previous lessons and suggests a framework for summative assessment. Student... More ...

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What Balances? (Kindergarten - 2nd Grade)

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In this lesson, one of a multi-part unit from Illuminations, students explore subtraction using a pan balance. They use subtraction facts to generate related... More ...

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Finding Addition Patterns (Kindergarten - 2nd Grade)

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In this lesson, one of a multi-part unit from Illuminations, a game encourages students to find the sums of two one-digit numbers. Students explore commutati... More ...

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How Many Left? (Kindergarten - 2nd Grade)

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In this lesson, one of a multi-part unit from Illuminations, students explore the familiar set model of subtraction. The students write story problems and fi... More ...

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Armstrong Numbers: Teacher Answer Key (6th Grade - 12th Grade)

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This reproducible spreadsheet, from an Illuminations lesson, shows one possibility for creating formulas and testing whether numbers are Armstrong numbers or... More ...

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