Instructional Video
Khan Academy

Khan Academy: Linear Algebra: Determinant of a Transpose

9th - 10th Standards
Video demonstrating that the determinant of a matrix is equivalent to the determinant of the transpose of a matrix. Proof by induction is used to prove this property. [14:10]
Instructional Video
Khan Academy

Khan Academy: More Determinant Depth: Duplicate Row Determinant

9th - 10th Standards
A video lesson proving that if a matrix has duplicate rows then its determinant will be 0.