revised August 2019
13
(1) Scientific investigation and reasoning. The student conducts classroom and outdoor
investigations, following home and school safety procedures and environmentally appropriate and
ethical practices. The student is expected to:
(A) demonstrate safe practices and the use of safety equipment as described 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
(B) make informed choices in the use and conservation of natural resources and reusing and
recycling of materials such as paper, aluminum, glass, cans, and plastic.
(2) Scientific investigation and reasoning. The student uses scientific practices during laboratory and
outdoor investigations. The student is expected to:
(A) plan and implement descriptive investigations, including asking well defined questions,
making inferences, and selecting and using appropriate equipment or technology to
answer his/her questions;
(B) collect and record data by observing and measuring, using the metric system, and using
descriptive words and numerals such as labeled drawings, writing, and concept maps;
(C) construct simple tables, charts, bar graphs, and maps using tools and current technology
to organize, examine, and evaluate data;
(D) analyze data and interpret patterns to construct reasonable explanations from data that can
be observed and measured;
(E) perform repeated investigations to increase the reliability of results; and
(F) communicate valid oral and written results supported by data.
(3) Scientific investigation and reasoning. The student uses critical thinking and scientific problem
solving to make informed decisions. The student is expected to:
(A) analyze, evaluate, and critique scientific explanations by using evidence, logical
reasoning, and experimental and observational testing;
(B) represent the natural world using models such as the water cycle and stream tables and
identify their limitations, including accuracy and size; and
(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, materials,
equipment, and models to conduct science inquiry. The student is expected to
collect, record, and analyze information using tools, including calculators, microscopes,
cameras, computers, hand lenses, metric rulers, Celsius thermometers, mirrors, spring
scales, balances, graduated cylinders, beakers, hot plates, meter sticks, magnets,
collecting nets, and notebooks; timing devices; and materials to support observation of
habitats of 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. The student is expected to:
(A) measure, compare, and contrast physical properties of matter, including mass, volume,
states (solid, liquid, gas), temperature, magnetism, and the ability to sink or float; and
(B) compare and contrast a variety of mixtures, including solutions.