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Marimba Makers

This engaging activity combines mathematics and music through the construction of a marimba. Students will learn to convert improper fractions to mixed numbers and vice versa while exploring how different key lengths create unique tones. The lesson includes a practical problem where students calculate the number of marimba keys that can be cut from specific board lengths. By solving these problems, students gain hands-on experience with fractions and apply their skills to a real-world context.

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Marimba Makers

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  1. Marimba Makers

  2. Whiteboard Warm-Up 185 or 18.5 • Place Value Bubble Numeral: • Write these improper fractions as mixed numbers • 11/3 15/6 23/10 • Write these mixed numbers as improper fractions. • 2 and 3/5 6 ¼ 80 ½

  3. To make a marimba, the instrument maker must cut each of the wooden pieces and pipes using different lengths. The different key lengths are what create the different tones.

  4. How many marimba keys can be made from each length?

  5. Exit Ticket • 1. The length of the board is 15/4 meters. How many ¾ meter keys are able to be made? • 2. The length of the board is 8/5 meters. How many 3/5 meter keys are able to be made?

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