LifeKnowledge: High School Lessons By Larry Downes|2018-08-13T15:54:59-04:00August 13th, 2018| Lifeknowledge lessons developed for high school students. Icons: (Folder) (PDF) (Word) (PowerPoint) (Excel) (Zip archive) (Web) (Google Doc) This educator resource is available in more than one file type. Please choose the one that best suits your need from the icons below.