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• Focus - Separate coarse and fine
life cycles of organisms and organisms & environments
Experiment with simple machines: gears
microorganisms
• Stacking lugs facilitate handling by keeping stacked units from sliding and damaging sign faces
Rotating Platform stop-signs • Focus - Separate coarseTurn your students into human gyroscopes with our wide, stable rotating platform. Now you can do the "skater's spin" without skates, a rink or ice! Our 16" (40cm) wide bright blue wooden disc has a nonslip surface and safely holds over 220 pounds (100 kg). Intended for hands on (or feet on) use, the unit has very low friction when supporting a weight of 100 pounds. Instructions describe experiments in rolling friction and gyroscopic precession with
