This document discusses critical writing and thinking. It states that critical reading and thinking leads to critical writing. It identifies that weak writing can occur when one's thinking is unclear. To write critically, one must think about what they've read, evaluate their own ideas, and plan an argument with a clear thesis. The writing should provide reasons and evidence to support the thesis while integrating enough description to aid understanding. It distinguishes descriptive writing from critical writing by noting critical writing evaluates, argues, draws conclusions and shows relevance, while descriptive writing simply provides information.