Very simply, pairs of learners construct a model of the tetrahedral silica structure using raisins and toothpicks. They dip it into a soapy solution and then blow a bubble "atom" into its center. The lesson plan gives instructions that...

Students build a 3-D tetrahedron model. In this tetrahedron lesson plan, students use materials such as a toothpick, paperclips, paper, raisins and more to build a silica tetrahedron model and discuss its importance in the atom.

Students study the physical properties of minerals and illustrate their functions.  In this mineral lesson students construct models of some minerals.