In a standards-based climate, it is important for teachers to know that they are addressing the concepts and skills that will prepare students for success on measures of achievement as well as success in the worlds of science, technology, engineering, and mathematics. This Teacher's Toolkit offers an approach for the design and delivery of high-quality instruction tht focuses on important goals and standards and research-based effective practices for improving student achievement. Thoughtfully crafted lessons are powerful tools for guiding the teaching/learning process and improving practice.