Solve Multi-Step Problems
The $20 Bill
Eddie has a new design for a $20 bill that he thinks would be hard to counterfeit. He knows that he has to give exact measurements in his design.
Computer Problems
What kinds of math problems could you have to solve in a company that builds computers?
A Classroom Full of Water
How much water would it take to fill up a classroom, in cubic feet and gallons?
Ferret Figures
50 ferrets (25 males, 25 females) are re-introduced into the wild, in a region of Colorado, one year in February. What would you need to know in order to make a good guess as to whether or not that population of ferrets will increase or decrease?
The Forest and the Trees
Forest ranger Arnold Wilson wants to plant three kinds of trees on a mountain: Ponderosa Pine, Douglas fir, and White Fir.
Recycling Proposal
Your city wishes to develop an effective recycling program similar to the one we have here in Seattle, and would like you to prepare a proposal for getting it done.
Robot Rover
Testing of the kinds of motors that will be used on the wheels shows that the probability that a motor will fail in 60 days of start-stop-start running is 3 out of a thousand, or 0.003.
Snow
Snow takes up a lot more room than the same amount of liquid water. For some kinds of snow, it can take 10 inches of snow to equal 1 inch of liquid water.
Timber Cruise
Using a sample of tree heights and diameters, this lesson gets students to see how foresters use problem solving to get an accurate estimate of the total volume of wood in a forest.
The Real World Update
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