29:29'must have', 'might have', 'should have' & 'can't have' to talk about the past: Live English Class
BBC Learning English
MIT 6.849 Geometric Folding Algorithms: Linkages, Origami, Polyhedra, Fall 2012 View the complete course: http://ocw.mit.edu/6-849F12 Instructor: Erik Demaine This class begins with folded examples produced by TreeMaker and Origamizer. Explanation of the triangulation algorithm, checkerboard folding, the Lang Universal Molecule, and Origamizer tucking molecules are offered. License: Creative Commons BY-NC-SA More information at http://ocw.mit.edu/terms More courses at http://ocw.mit.edu
Published 2014-08-26 · Watch on YouTube ↗
Availability and playback restrictions are controlled by the original channel.
29:29BBC Learning English
06:07
47:40
26:06The Royal Institution
07:47
07:28
14:14Allow Google Analytics to measure visits. Your history stays in your browser. Privacy details