121, TEKS for Health Science Technology Education. Subchapter B. Scientific, High School Chapter 121. The prerequisites are Biology and Chemistry or Biology and concurrent enrollment in Chemistry. This course is recommended for students in Grade 11 or 12.
Science is a way of learning about the natural world.
Students should know how science has built a vast body of changing and increasing knowledge described by physical, mathematical, and conceptual models, and that science may not answer all questions. A system is a collection of cycles, structures, and processes that interact. Students should understand a whole in terms of its components and how these components relate to each other and to the whole. All systems have basic properties that can be described in terms of space, time, energy and matter. Change and constancy occur in systems and can be observed and measured as patterns.