The Atom Builder descriptions Chemistry teaching software which simulates the building of any of the first 20 atoms on screen. Learn how atoms are formed from electrons protons & neutrons & how the electrons are arranged in shells or energy levels. Includes a reference section to support students learning with basic facts & information. Price includes full site license. Use as a demonstration tool as a teaching tool - get pupils to access the reference sections before attempting the simulation or as a revision tool prior to tests or exams.