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Wind Vane Demonstrator, SCIENCE FIRST INC SE
Simple to operate and easy to use, this economical wind vane clearly provides current wind direction. Its heavy cast base and sturdy post support a sensitive cone bearing assembly that responds to even the slightest wind. Place the “N” portion of the wind vane in the northern position and read off the direction shown by the pointer.
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Cellophane
Use the various colors to demonstrate plants’ reaction to light waves.
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Plastic Knife Switches
Virtually unbreakable, these sturdy knife switches feature brass poles and knives, making the switches well-suited for use in general-purpose classroom and laboratory experiments.
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Innovating Science® Dialysis Tubings
The semi-permeable membrane, created from a natural source of cellulose, allows passage of particles up to 14000 Da.
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Ward's® TD/CT Periodic Tables
Developed by teachers, proven in the classroom, these periodic tables are color coded and engaging.