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Shamrocks in Ireland are actually 3-leafed white clover, trifolium repens. If you are lucky, you can sometimes find a four-leafed clover. How rare is finding a 4-leafed clover? How hard do you...
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Is Daylight savings time helpful? How does it make you feel?
"Spring forward, fall back"
Early Sunday morning, March 12th at 2 am, we change our clo...
A little more pizza fun before Pi day!
Which should we order and why? Two 12-inch pizzas or one 18-inch pizza? Which will give you more pizza? More crust? Which is the better deal? ...
Check out our Christmas Tree! We need to buy lights for the tree. Without calculating, guess how many feet of lights we will need. What information would help you t...
It is really dark out now. Why is that?
Students appreciate how their latitude effects the darkness of their late afternoon location as they study the earth's tilt and the logic of da...
In this problem based activity students first guess and then try to calculate whether they will have enough paper to wrap this present without taping pieces of wrapping paper together.
Con...
Gumball Machine Problem from Brian Marks on Vimeo
This problem is a little puzzle to get your students thinking, estimating, and calculating. We've given you a pdf file w...