Simple Switch Demonstrator with 4mm Terminals Capacity_25mL one fitted with an exploder

one fitted with an exploder piston for momentum and action-reaction investigations

deflecting a pivoting cobalt-steel compass needle inside a rectangular conductor frame to show that current generates a magnetic field

adjustable via motor voltage to mimic temperature and float weight to mimic pressure

and ice-pail induction

Hand-driven Newton's color disc that spins seven painted segments fast enough to merge into apparent white through persistence-of-vision and additive color mixing

Simple Switch Demonstrator with 4mm Terminals Capacity_25mL one fitted with an exploderSingle open or closed switch on a 4mm terminal base, providing the cleanest hand operated way to make and break a circuit during early electricity instruction with stackable modules.