MDF Wheel, 6mm thick fibre board, 34mm and come with drilled centre holes for 4mm dowel, There are also available in 54mm and 74mm or you can order a mix bag
Model, Graphite II (Hexagonal) Crystal, a low temperature dimorphic form of carbon, belongs to the hexagonal crystal system. Various physical properties may readily be explained from its structure, Dimensions: 24 x 2
Model, Edge Dislocation Crystal, contains 156 - 1 inch balls, Two main types of dislocation exist: edge and screw, found in real materials typically are mixed, Dimensions: 36 x 24 x 12 in, Weight: 10 lbs
Model, Diamond Crystal, is surrounded by four atoms directed in space toward the vertices of a tetrahedron, The hardness and large density of the diamond, contains 66- 1 inch balls, Dimensions: 24 x 24 x 12 in, Weigh
Model, Wurtzite Crystal, named after the mineral wurtzite, is a crystal structure for various binary compounds, It is an example of a hexagonal crystal system, Wurtzite contains 39 - 1 inch balls, Dimensions: 24 x 2
Model, Aragonite Crystal, is a carbonate mineral, one of the two common, naturally occurring, crystal forms of calcium carbonate, CaCO3, It is formed by biological and physical processes, includes 44 1 inch balls,
Game Chemical Reactions Learning Center-Grade 6-9, features a Curriculum Mastery Game with 30 illustrated, topic-specific question cards; 1 laminated game board; and materials for four players; 4-panel and visual guide, Write-On/Wipe-Off activities