BB Board Overhead Projection Device at Educational Innovations


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BB Board Overhead Projection Device
HS-12

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$49.95 ea.

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With this device, one can demonstrate the slip planes, dislocations, and defect holes in a two-dimensional array of more than 1,000. There is a one-to-one correspondence between annealing, hardening and tempering of a steel bobbie pin and the projected model of sphere packing. More than 5000 of these devices have been constructed at teacher workshops throughout the country. Complete instructions for using are included.

Density Flow Models - allow additional shipping time

Bring the Earth Sciences to life with the truly amazing and versatile Density Flow Model.

Geological Flow Demo - Deep Sea Round

Rotate the disk and see new sand patterns forming for the next 30 minutes. Great for sedimentary rock formation discussions!

Magic Sand Wand

The challenge: Can you move the sphere from one end of the tube to the other?

The Earth - 3 Video Set (VHS) - While Supplies Last

Take a close-up look at some of Earth's most spectacular phenomena. While Supplies Last