Implementation of Texas Essential Knowledge and Skills for Science, Elementary. Science, Grade 3. In Grade 3, the study of science includes planning and implementing simple classroom and field investigations to develop the skills of collecting information using tools such as a microscope, making inferences, communicating conclusions, and making informed decisions. Students also use computers and information technology tools to support scientific investigations. They observe the direction and position of objects as they are pushed and pulled, and movement of the Earth's surface as examples of change caused by a force.
Students investigate magnetism and gravity.
In addition, students explore organisms' needs, habitats, and competition with other organisms within their ecosystem. 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. Students should understand a whole in terms of its components and how these components relate to each other and to the whole.