Root Tip Model on Base, 250X Enlarged, 12" Subcategory_Force and Motion displayed on a plastic-and-metal rack

displayed on a plastic-and-metal rack with a carrying handle for transport

sodium benzoate

filled with iron filings whose alignment renders 3D field lines around any bar magnet up to 0

supplying a soldering-free unit for student-built optoelectronic and light-detection circuits

Corrosion-resistant ten-piece stainless steel slotted mass set totaling 1100 grams across 10 to 500 gram pieces

Root Tip Model on Base, 250X Enlarged, 12" Subcategory_Force and Motion displayed on a plastic-and-metal rackGreatly magnified root tip model on a base exposes the root cap, meristematic zone, and zones of elongation and differentiation for plant growth teaching.