£16.67 Teaching with Algebra Tiles: Distribution and Factoring Distribution and Factoring are essential algebraic skills needed when furthering one's study of mathematics and too often they are condensed into a set of procedural instructions. In this course we aim to offer pupils the opportunity...
We prove that the 2017 puzzle game ZHED is NP-complete, even with just 1 tiles. Such a puzzle is defined by a set of unit-square 1 tiles in a square grid, and a target square of the grid. A move consists of selecting an unselected 1 tile and then filling the next unfilled square...