Egg, Sudoku, Bridge, Scale, Winch
4th grade January 31, 2007
At first I described the testing of a hypothesis I heard while at Tufts University Datalogging Symposium
that the thinning of an egg shell in vinegar could be datalogged with a light sensor.
A light sensor reads 45 without the light and 95 with.
Set up
Programs
Then different groups went on to build bridges and structures.
R T I
are the "letter" buildings at
We know where some real examples of these are around Huntington, WV.
Colors can be used instead of numbers.
With some clever work, these three built both a letter scale and a
winch with the same set.
The letter scale can measure the difference between 2 papers and 3.
