Math and Caves
Math Project Proposals
Connection and Classification
Origami Design Gallery
Origami Research and Applications
Modular Polyhedra from Waterbomb Base Units
Suggestions for Determinant from Matrix Multiplication
Ideas for further contemplation from the blog post
Determinant from Matrix Multiplication
For $n \times n$ matrices, use the
(which was probably how you learned to calculate determinants in school, anyway).
Derive a general formula for $n \times n$ matrices using
Determinants for non-square matrices?
Are there consequences for the eigenvalues?