63-Piece Worcester Electrical Circuit Board Kit Science Classroom sized as a load that

sized as a load that visibly spins when current flows in the circuit

Graduated white screen mounted for use on the optical bench

deflecting visibly in the presence of a charged object to reveal both charge presence and polarity

5 by 4-inch ventilation apparatus modeling historic mine-gallery airflow and domestic chimney convection through a candle-driven hot-air-rise demonstration

transistor

63-Piece Worcester Electrical Circuit Board Kit Science Classroom sized as a load thatHard plastic 13x13 inch Worcester circuit board with 12 metal poles and 4 banana terminals, the foundation for student built series parallel circuits and electromagnetic induction demonstrations.