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## Mathematical Explorations: Developing the Common Denominator Fraction Division Algorithm

### classroom-ready activiti

Division of fractions, a troublesome area for students, is looked at anew using a common denominator algorithm.

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## Math For Real:The Half-Lives of Medicines

### when will I ever use this?

Calculating a half-life, the approximate time it takes for the body to remove one-half the active ingredient in a medicine, provides the real-life tie-in to this activity.

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## Reveal Limitations through Fraction Division Problem Posing

Students notoriously struggle with division of fractions in 5 key areas. Hear what those 5 areas are and how recommendations address the limitations.

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## Trees to Pods to Beans to Chocolate

Students explore the mathematics found in chocolate production.

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## Redeem Reasoning

### readers speak out

This opinion piece discusses how simplicity, ease, and efficiency—in the guise of shortcuts, tips, and packed procedures—kill mathematical reasoning.

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## How Did the Answer Get Bigger?

Developing number and operation sense associated with fraction division is viewed from multiple perspectives: modeling, equivalence, and symbolism.

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## Orange You Glad I DID Say “Fraction Division”?

Students explore multiplicative comparisons and the meaning of remainders using their own concrete representations, including orange wedges.

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## Questioning the Order of Operations

Abandon mnemonics and make stronger connections between the operations and properties of arithmetic.

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## Sweet Work with Fractions

The Maximum Chocolate Party game requires students to divide and compare fractions in a practical and concrete context.

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## Students with Learning Disabilities Tackle Multistep Problems

Support math conversations and teach students to approach various problem-solving tasks by encouraging the use of tables.