Connecting Mathematicians of All Ages

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• MP1 - Make sense of problems and persevere in solving them. (22)
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• MP7 - Look for and make use of structure. (17)
• MP8 - Look for and express regularity in repeated reasoning. (13)

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For the Math Mind Reading Trick, you’ll need a volunteer who’s willing to have their mind read. The person performing the trick holds out the four cards and askes their volunteer to pick a number (whole numbers only, no fractions allowed!) between 1 and 15 and keep it a secret. Next, the mind-reader asks the volunteer if their number is on the cards one-by-one. The volunteer answers the questions with yes or no answers, and with some magic and a little math, the mind-reader figures out their number!

### Humans, Zombies, & Other Problems Crossing the River

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A town faces an epidemic of zombies! Luckily, the virus has just started to spread and the infected are able to stave off their hunger for human brains… for now. In fact, they’re willing to work alongside the remaining humans to help them get across a river to safety. Can you get all the humans and zombies across safely?

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