Fine Iron Filings in Sprinkle Bottle, 100g, 40-60 Mesh Science at Home_General Science Supplies Six-piece transparent acrylic prism and

Six-piece transparent acrylic prism and lens set with all faces polished

5 by 4-inch ventilation apparatus modeling historic mine-gallery airflow and domestic chimney convection through a candle-driven hot-air-rise demonstration

Two pith balls suspended on unspun silk from a brass pillar

using metal bearings to minimize friction in uniform-acceleration and Newton's-second-law work

Fine Iron Filings in Sprinkle Bottle, 100g, 40-60 Mesh Science at Home_General Science Supplies Six-piece transparent acrylic prism andFine 40 60 mesh iron filings in a 100 gram sprinkle bottle, sized to dust evenly over paper or around a magnet to make field lines visible during introductory magnetism work.