This is easy and pretty much all you need is to buy is a bag of m&m's!
My students loved this and made great connections between the actual layers of the Earth and how it correlates with m&m's. There is also an answer key included. Very easy
Have students create a poster or powerpoint to assess their understanding and knowledge of the similarities, differences, and explanation of elements, compounds, and mixtures. Excellent as an introduction or summative assessment.