Curated OER
Balancing Chemical Equations
Students study how to balance chemical equations. For this investigative lesson students work on how to balance chemical equations.
Museum of Science
The Atom's Family: Mighty Molecules
In this activity, students construct models of molecules using marshmallows and gum drops.
Washington State University
Washington State University: Formulas
This site from Washington State University explains the idea of a formula. It gives a definition and many examples of formulas.