Implementation of Texas Essential Knowledge and Skills for Science, Elementary. Science, Grade 2. In Grade 2, the study of science includes planning and conducting simple classroom and field investigations to help students develop the skills of making measurements using standard and non- standard units, using common tools such as rulers and clocks to collect information, classifying and sequencing objects and events, and identifying patterns.
Students also use computers and information technology tools to support their investigations.
They observe melting and evaporation, weathering, and the pushing and pulling of objects as examples of change. In addition, students distinguish between characteristics of living organisms and nonliving objects, compare lifelong needs of plants and animals, understand how living organisms depend on their environments, and identify functions of parts of plants and animals. 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 also should know that science may not answer all questions. A system is a collection of cycles, structures, and processes that interact.