This document discusses education frameworks and taxonomies that can be used to develop 21st century skills. It outlines Bloom's Taxonomy and a revised version by Anderson and Krathwohl that categorizes learning objectives into remembering, understanding, applying, analyzing, evaluating and creating. The document also references frameworks by Marzano that identify dimensions of learning and by Costa and Kallick that focus on habits of mind. It encourages the use of these frameworks to develop skills like critical thinking, problem solving, collaboration and digital literacy.