Visit this Web site from the National Teacher Training Institute (NTTI) for a set of engaging lesson plans for middle and high school students. The latest life science offerings address DNA and RNA, pika camouflage, environmental issues, and adaptation. A number of older lesson plans are available as well. In addition to providing detailed instructions, each lesson plan includes a variety of features and resources such as links for in-class research and downloadable activity sheets. The lessons take about one class period to complete and require the use of educational videos -- part of NTTI's goal to increase "dynamic use of classroom technology."