2mm Connecting Lead, Model N Science Classroom sized to mount alongside a

sized to mount alongside a tone generator for converting electrical signals into audible tones during sound-wave demonstrations

Seventy-eight-piece molecular model set with 45 atoms and 33 bonds for building basic organic and inorganic structures

0V max for whole-class hands-on work

providing the more readily oxidized electrode that drives current in classic galvanic-cell demonstrations

25-inch base

2mm Connecting Lead, Model N Science Classroom sized to mount alongside aInsulated 2mm plug lead in the small scale lead family, sized for breadboarded circuits and compact apparatus where the standard 4mm hardware doesn't physically fit the layout.