This activity uses gumdrops and pipe cleaners to have students build various molecules. (I have substituted the gumdrops for beads in previous years). This is a great way to reinforce the concepts of molecules, atoms, and elements and the kids love building and displaying their creations. This activity will also help to reinforce reading a chemical formula.
All directions are included as well as student handouts. It also includes follow-up assessment questions.
The document is a Word document so it can be edited to fit your classroom needs.