Green 5mm LED, 10-Pack Lab Equipment and Supplies_Plastic Labware Amoeba Proteus model at 1000x

Amoeba Proteus model at 1000x magnification reveals extended pseudopod

U-magnet and brass-rail apparatus that demonstrates the motor effect

14 push buttons

pink-dotted at one end of each magnet to flag the matching pole and supplied with steel keepers between lessons

Speed-controlled 6V motor driving two cams pumps four spring-mass systems at any chosen frequency

Green 5mm LED, 10-Pack Lab Equipment and Supplies_Plastic Labware Amoeba Proteus model at 1000xTen pack of 5mm green through hole LEDs, rated for student circuit construction and series parallel investigations where junction voltage and current limiting concepts get introduced.