05:51
Cutting a regular dodecahedron from a wooden cube.
04:00
Math magic
04:35
Ball drilling jig, for making molecular and geometric models
01:31
Demonstration of the Pythagorean theorem
03:22
Making elemental sulfur from rocks
00:18
Thorianite in a cloud chamber
04:21
Periodic table of minerals
02:10
Aluminum endocasts
02:07
Velociraptor vs chicken foot
01:19
Golden digger wasp, sphex experiment #2
01:15
Great golden digger wasp, sphex experiment #1
07:37
Round periodic table
03:51
Human skull bones compared to other animals.
03:13
Mary Ellen jasper stromatolites
02:54
Lake Superior agates
01:47
Equisetum spores with elaters contracting
X
About
Tags