Math and Economics at the Farmers Market

There’s still nothing like experiencing math in the context of of simple cash purchases. I say “still” because of the plethora of available extra-curricular math resources like competitions, online programs, manipulatives, etc. In our age dominated by credit card and online purchases, many kids don’t have the opportunity to develop the skills of making simple arithmetic computations in real time while talking to people….
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Three sisters and their PJ’s

When I saw Grace, Sophie, and Chloe in their mismatched pajamas, a question immediately popped up:   if there are 3 sisters, and 3 pairs of pajamas, how many ways are there for them to wear the pajamas so that the top and bottom are mismatched?   The 3 pajamas will be referred to by…
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