3/4" Plastic Marbles, 5-Pack Entomology & Zoology_Dissection Adjustable elastic strap and ventilation

Adjustable elastic strap and ventilation ports distinguish these clear safety goggles for chemistry

Many industrial and hobby hot wire foam cutters also use chromium wire

Large-scale typical flower model with removable floral parts and a bisected ovary showing internal ovule arrangement for detailed botany instruction

providing an introductory tool for studies of induction

letting students explore mechanical advantage by counting the supporting strands and measuring effort

3/4" Plastic Marbles, 5-Pack Entomology & Zoology_Dissection Adjustable elastic strap and ventilationFive pack of 3 4 inch plastic marbles, providing lightweight projectiles for collision and ramp experiments where steel or glass would carry too much momentum or break on impact.