St. Louis Science Center Planetarium Mathematics I. or II.
MODEL(S)
Name ____________________ Date __________
Solve the problem(s) stated below and attach any graph paper graphs or diagrams. Turn this in to your teacher for class interest. If you wish to email your work to the address below - please use your initials in place of your name. You will probably not get a return response other than a smile. For helpful suggestions link here. For resource equations or formulas related to the St. Louis Science Center Planetarium click here: 
Problem:
( Print this page to work and turn in. )
A Curved Surface Created By A String Model
You can make two three inch radius disks with small holes every five degrees very near the edge then string through the holes while holding the disks from 6 to 10 inches apart. This model demonstrates a ruled surface quality of a hyperboloid of one sheet. Model information that may help construction.
This model is not scaled to the size of the St. Louis Science Center Planetarium. If you make that your project send a picture through email with some notes. The planetarium model would not need two sets of strings. This model is two hyperboloid of one sheet surfaces put together for fun.
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