Physics Nylon Pulley with 30m Demonstration Cord Gifts_Kitchen pink-dotted at one end of

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

bridge-balance

this 75mm Alnico bar resists demagnetization across years of classroom handling

Life-size elbow joint model shows humeroulnar and humeroradial articulations with supporting ligaments and arm muscle insertions for upper-limb anatomy teaching

Physics Nylon Pulley with 30m Demonstration Cord Gifts_Kitchen pink-dotted at one end ofCoated nylon demonstration cord 30 meters long on a cardboard cone, low friction enough to minimize error in pulley, pendulum, and simple machine force motion measurements.