Wooden Frame Abacus, 3 U-Shaped Steel Wires Subcategory_Wash Bottles this compact insulated wire keeps

this compact insulated wire keeps color-coded wiring intact when student work shifts to small-scale breadboarded circuits

sized for finer-gauge resistance demonstrations and small-scale heating elements where the heavier gauges would over-deliver current

letting instructors tailor voltage to light sources and experiment-specific requirements

Bundled with an activity guide

tracing hot-air flow between the twin flues

Wooden Frame Abacus, 3 U-Shaped Steel Wires Subcategory_Wash Bottles this compact insulated wire keepsWooden frame abacus with three U shaped steel wires carrying 20 plastic beads each on a 13 by 6 inch base, the smallest three wire option for very early counting and number sense work.