Scientific investigation and reasoning

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The student conducts classroom and outdoor investigations following home and school safety procedures. The student is expected to:
Identify, describe, and demonstrate safe practices as outlined in Texas Education Agency-approved safety standards during classroom and outdoor investigations, including wearing safety goggles or chemical splash goggles, as appropriate, washing hands, and using materials appropriately; and
Identify and demonstrate how to use, conserve, and dispose of natural resources and materials such as conserving water and reuse or recycling of paper, plastic, and metal.
The student develops abilities necessary to do scientific inquiry in classroom and outdoor investigations. The student is expected to:
Ask questions about organisms, objects, and events during observations and investigations;
Plan and conduct descriptive investigations;
Collect data from observations using scientific tools;
Record and organize data using pictures, numbers, and words;
Communicate observations and justify explanations using student-generated data from simple descriptive investigations; and
Compare results of investigations with what students and scientists know about the world.
The student knows that information and critical thinking, scientific problem solving, and the contributions of scientists are used in making decisions. The student is expected to:
Identify and explain a problem and propose a task and solution for the problem;
Make predictions based on observable patterns; and
Identify what a scientist is and explore what different scientists do.
The student uses age-appropriate tools and models to investigate the natural world. The student is expected to:
Collect, record, and compare information using tools, including computers, hand lenses, rulers, plastic beakers, magnets, collecting nets, notebooks, and safety goggles or chemical splash goggles, as appropriate; timing devices; weather instruments such as thermometers, wind vanes, and rain gauges; and materials to support observations of habitats of organisms such as terrariums and aquariums; and
Measure and compare organisms and objects.

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