The document outlines key concepts and understandings students should have regarding scientific investigation and design, properties of matter and energy, Earth systems, and the nature of science. Specifically, it discusses that students should be able to: apply processes of scientific investigation including asking questions, conducting experiments, analyzing data, and communicating conclusions; understand common properties and changes in matter and energy; comprehend processes and interactions within Earth's systems and dynamics of Earth and space; and recognize how scientific knowledge is built and subject to change over time through processes like peer review.