Texas Essential Knowledge and Skills - Science — Grade 1

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The student conducts classroom and outdoor investigations following home and school safety procedures and uses environmentally appropriate and responsible practices. The student is expected to:


recognize and demonstrate safe practices as described in the Texas Safety Standards during classroom and outdoor investigations, including wearing safety goggles, washing hands, and using materials appropriately;


recognize the importance of safe practices to keep self and others safe and healthy; and


identify and learn how to use natural resources and materials, including conservation and reuse or recycling of paper, plastic, and metals.


The student knows that organisms resemble their parents and have structures and processes that help them survive within their environments. The student is expected to:


investigate how the external characteristics of an animal are related to where it lives, how it moves, and what it eats;


identify and compare the parts of plants;


compare ways that young animals resemble their parents; and


observe and record life cycles of animals such as a chicken, frog, or fish.


The student develops abilities to ask questions and seek answers in classroom and outdoor investigations. The student is expected to:


ask questions about organisms, objects, and events observed in the natural world;


plan and conduct simple descriptive investigations such as ways objects move;


collect data and make observations using simple equipment such as hand lenses, primary balances, and non-standard measurement tools;


record and organize data using pictures, numbers, and words; and


communicate observations and provide reasons for explanations using student-generated data from simple descriptive investigations.


The student knows that information and critical thinking are used in scientific problem solving. The student is expected to:


identify and explain a problem such as finding a home for a classroom pet and propose a solution in his/her own words;


make predictions based on observable patterns; and


describe what 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, primary balances, cups, bowls, magnets, collecting nets, notebooks, and safety goggles; timing devices, including clocks and timers; non-standard measuring items such as paper clips and clothespins; weather instruments such as classroom demonstration thermometers and wind socks; and materials to support observations of habitats of organisms such as aquariums and terrariums; and


measure and compare organisms and objects using non-standard units.


The student knows that objects have properties and patterns. The student is expected to:


classify objects by observable properties of the materials from which they are made such as larger and smaller, heavier and lighter, shape, color, and texture; and


predict and identify changes in materials caused by heating and cooling such as ice melting, water freezing, and water evaporating.


The student knows that force, motion, and energy are related and are a part of everyday life. The student is expected to:


predict and describe how a magnet can be used to push or pull an object;


describe the change in the location of an object such as closer to, nearer to, and farther from; and


demonstrate and record the ways that objects can move such as in a straight line, zig zag, up and down, back and forth, round and round, and fast and slow.


The student knows that the natural world includes rocks, soil, and water that can be observed in cycles, patterns, and systems. The student is expected to:


observe, compare, describe, and sort components of soil by size, texture, and color;


identify and describe a variety of natural sources of water, including streams, lakes, and oceans; and


gather evidence of how rocks, soil, and water help to make useful products.


The student knows that the natural world includes the air around us and objects in the sky. The student is expected to:


record weather information, including relative temperature, such as hot or cold, clear or cloudy, calm or windy, and rainy or icy;


observe and record changes in the appearance of objects in the sky such as clouds, the Moon, and stars, including the Sun;


identify characteristics of the seasons of the year and day and night; and


demonstrate that air is all around us and observe that wind is moving air.


The student knows that the living environment is composed of relationships between organisms and the life cycles that occur. The student is expected to:


sort and classify living and nonliving things based upon whether or not they have basic needs and produce offspring;


analyze and record examples of interdependence found in various situations such as terrariums and aquariums or pet and caregiver; and


gather evidence of interdependence among living organisms such as energy transfer through food chains and animals using plants for shelter.