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FullText Articles in Physics
Size Matters, Morton Sternheim
Size Matters, Morton Sternheim
Nanotechnology Teacher Summer Institutes
Size matters in the way materials behave. An introductory PowerPoint and an activity writeup. Three activities illustrate how the surface to volume ratio changes as the size changes. In the first, a deck of playing cards is used to make square arrays of cards of increasing size. Next wooden cubes are used to make similar observations in 3 dimensions. Finally, comparing the rates at which an intact Alka Seltzer tablet and a crushed tablet react in water shows the effect of particle size on chemical reactions.
Powers Of Ten: From Meters To Nanometers And Beyond, Rob Snyder
Powers Of Ten: From Meters To Nanometers And Beyond, Rob Snyder
Nanotechnology Teacher Summer Institutes
The goal of this activity is to guide students toward an understanding of nanoscale dimensions by:

Making a number of measurements using meter sticks, magnifiers, microscopes and spectrometers so students can make observations and generate their own data.

Using scientific notation to compare the measurements they have made with the dimensions of very small structures
More On Powers Of Ten, Morton Sternheim
More On Powers Of Ten, Morton Sternheim
Nanotechnology Teacher Summer Institutes
A powers of ten personation and activity adapted from the Nanosense project:
http://nanosense.sri.com/activities/sizematters/index.html