Double Convex Acrylic Lens, 89mm, 20cm Focal Length, Clear and Frosted Item Type_Animal Model this two-coil demonstration transformer lets

this two-coil demonstration transformer lets students swap primary and secondary windings to watch step-up and step-down voltage shifts firsthand

chloroplasts

Quality wooden 24-inch demonstration vernier caliper with a sliding arm

vascular supply

and inner ear sections support detailed auditory anatomy teaching at 3x enlargement for classroom visibility

Double Convex Acrylic Lens, 89mm, 20cm Focal Length, Clear and Frosted Item Type_Animal Model this two-coil demonstration transformer letsAcrylic double convex lens at 89mm with one clear face and one frosted, 20cm focal length, the frosted side acting as a screen for projected real image observation.