Resistor Demonstration Board Geology Wear-replacement timer switch for the

Wear-replacement timer switch for the goggle sanitizer cabinet

Jumbo three-dimensional frog dissection model with keycard demonstrates amphibian anatomy and organ systems for detailed vertebrate teaching

Chrome-plated steel wire stand at 5 x 5 x 5 inches supports flasks and beakers above alcohol burners for classroom chemistry demonstrations

600 turns) and a load hook beneath the core let students isolate the effect of turns from current on electromagnet pull force

Resistor Demonstration Board Geology Wear-replacement timer switch for theDesigned to teach Ohm's law and current limiting behavior, this resistor module on a demonstration base with 4mm plug connections drops into series with bulbs and LEDs in student circuits.