Try to spend as little money as possible. Be creative by using THREE different colored things from home: M&M's, eraser heads, ping pong balls, styro foam, clay, etc.
For more ideas, visit the website for pictures of atom models from past years.
Grading criteria:
- Correct # of protons
- Correct # of neutrons
- Correct # of electrons and in the right shell structure.
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhgwGf6NFZa5cIJVWIM47R5VergQyTehA8MJfhHLoUx4QsW84fj6B8etkWhDscZqMnlBC-C9sQotlQbXzRXWN9alNrpZLPZCr5vRAVhcsJpwvLpVYwZj5-CsLlfFz2ApBslqSvjQG2jZN4/s320/ceiling+model.jpg)
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEh800zgdDzCwl1Z6Q773-OBENT52XYnpmKivMJSmF_p63LAZMouFcSe1Qstgj9scNgxQstpDj3kgIzOwzasburXDMk7GgMOWTquoFSGdLof0ll94cTgX59NOKoYPv27dReFhvJpIkJ4t98/s320/ceiling+model+2.jpg)
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