This taxonomic principles lesson for Life Sciences 11 in the BC curriculum provides a complete 55-minute lesson that can also be adapted for Grades 10, 11, or 12 biology classes. The resource includes a 10-page student handout and a 9-slide PowerPoint presentation designed to support clear instruction and classroom discussion. Students explore key classification concepts including taxonomy, binomial names, taxonomic trees, cladograms, and dichotomous keys. The lesson helps students understand ho