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Direct linkLim, Kieran F. – Teaching Science, 2012
The common question of why the tetrahedral angle is 109.471 degrees can be answered using a tetrahedron-in-a-cube, along with some Year 10 level mathematics. The tetrahedron-in-a-cube can also be used to demonstrate the non-polarity of tetrahedral molecules, the relationship between different types of lattice structures, and to demonstrate that…
Descriptors: Logical Thinking, Geometric Concepts, Molecular Structure, Teaching Methods
