tags: prime numbers

tags: prime numbers
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Lunar New Year 2026

Number Sense Holidays and Annual Events Current events Any time math
 The 2026 Lunar New Year falls on Tuesday, February 17. In this updated activity, students will explore the unique naming system of the Lunar New Year, which combines the Heavenly Stems and Earth...

Want to earn $150,000? - Mersenne prime search

Algebra Number Sense
What's a Mersenne prime?  How hard could it be to find the next one? Why are there only 50 known Mersenne primes?     What's with $150,000?

Cicada swarmaggedon

Algebra Number Sense Math and Science
Most of the life cycle of the Magicicada Septendecim is spent underground.  Then at 17 year intervals, these cicadas emerge from the ground, climb deciduous trees, molt into a...
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