Math Topics:

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Mathematical Practices:

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Grades:

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Seven Flipped

This is a really interesting problem from NRICH. Please visit their site to find many more rich and engaging math tasks.

Task Instruction

Remember that you can try this not only on paper but using coins or other objects around you. As long as you can tell the sides from each other, you can use it!

Reference

The NRICH website publishes free mathematics resources designed to challenge, engage and develop the mathematical thinking of students aged 5 to 19. NRICH also offers support for teachers by publishing Teachers’ Resources for use in the classroom.