Iron Pendulum Bob with Hook, 25mm Glassware_Glass Beakers and nuclear division stages for

and nuclear division stages for cell division teaching

supplying replacements when the originals lose loft or split during repeated charging cycles

PNP transistor on a transparent base with 4mm color-coded sockets and a printed circuit diagram

and cranial proportions for pediatric instruction

Miniature desktop torso with 12 removable parts includes a dissectable head and brain for compact classroom anatomy and biology teaching

Iron Pendulum Bob with Hook, 25mm Glassware_Glass Beakers and nuclear division stages forIron 1 inch diameter pendulum bob for periodic motion experiments, the heaviest metal option alongside brass, copper, and aluminum bobs in the pendulum bob series.