1 Scientific investigation and reasoning. The student conducts classroom and outdoor investigations following home and school safety procedures and environmentally appropriate and ethical practices.
1.A demonstrate safe practices and the use of safety equipment as outlined in Texas Education Agency-approved safety standards during classroom and outdoor investigations using safety equipment, including safety goggles or chemical splash goggles, as appropriate, and gloves, as appropriate; and
1.B make informed choices in the conservation, disposal, and recycling of materials.
2 Scientific investigation and reasoning. The student uses scientific practices during laboratory and outdoor investigations.
2.A describe, plan, and implement simple experimental investigations testing one variable;
3.C connect grade-level appropriate science concepts with the history of science, science careers, and contributions of scientists.
4 Scientific investigation and reasoning. The student knows how to use a variety of tools and methods to conduct science inquiry.
4.A collect, record, and analyze information using tools, including calculators, microscopes, cameras, computers, hand lenses, metric rulers, Celsius thermometers, prisms, mirrors, balances, spring scales, graduated cylinders, beakers, hot plates, meter sticks, magnets, collecting nets, and notebooks; timing devices; and materials to support observations of habitats or organisms such as terrariums and aquariums.
5 Matter and energy. The student knows that matter has measurable physical properties and those properties determine how matter is classified, changed, and used.
5.A classify matter based on measurable, testable, and observable physical properties, including mass, magnetism, physical state (solid, liquid, and gas), relative density (sinking and floating using water as a reference point), solubility in water, and the ability to conduct or insulate thermal energy or electric energy;