Tool: Classic Chembalancer
Sulan Dun

http://mathforum.org/mathtools/tool/24454/

Classic Chembalancer is an online game that teaches
balancing chemical equations by inspection. Students
type coefficients in front of each molecule and the
computer draws the corresponding number of molecules
so students can make the elements or groups of elements
match -- a logic similar to the kind exercised in
simplifying algebraic polynomials.


Daniel
Del Paraíso de Logo
http://mondragon.angeltowns.net/paradiso/