Model Homo Habilis Knm-Er 1813 Cranium, 1.9 MYA, was discovered by K. Kimeu in 1973 at Koobi Fora, Kenya, and described by R. Leakey in Nature in 1973, Size: 17.1L x 11.8W x 11.6H (cm)
Convection of Gases Apparatus, consists of a metal box (22x10x11cm) with clear acrylic front panel, two glass chimneys, a candle and a cotton filled wick as the smoke source, Includes activity guide
Lewis structure Set, Help students determine the types of bonds in a substance, draw Lewis structures, and construct models of molecules, Chemists find the use of models helpful to construct Lewis structures and study covalent bonding