University of Saskatchewan (Canada)
University of Saskatchewan: Techniques for Proofs
The University of Saskatchewan's Department of Mathematics and Statistics provides high school students with online tutorials and exercises on what they deem some of the most important techniques for mathematical proofs: truth tables,...
Math Planet
Math Planet: Geometry: Conjecture
Conjecture is explained through examples and a video lesson. [0:41]
Texas Instruments
Texas Instruments: Numb3 Rs: The Missing City
Based off of the hit television show NUMB3RS, this lesson has students examine maps of a crime spree in order to figure out if any locations have been unreported. The lesson is not math-intensive and instead forces students to use...