Texas TEKS 1.5.D

Science1st GradeRecurring themes and concepts

The Standard

examine the parts of a whole to define or model a system

Texas Essential Knowledge and Skills for Science

Teacher's field guide

What Students Need to Do: Students identify the parts of a familiar object or group. They use a drawing, model, or labels to show how the parts work together as one whole.
What Mastery Looks Like: Given an object such as a plant or toy car, students can name the whole and identify at least three parts. They can explain what each part does and show where it belongs.
Common Misconceptions: Students may call any group of objects a system, even when the objects do not work together. They may confuse a part with the whole or think all parts must touch. They may name what a part looks like without explaining its job.
How to Assess It: Show a picture of a bicycle and ask: “Label the whole, name three parts, and explain how one part helps the bicycle work.”

Lesson moves

Give pairs a toy car to inspect, then have them sketch and label the body, wheels, axles, and whole car.
Show a shoe and ask students to write or discuss how the sole, laces, and tongue work together.
Play Part and Whole Match with picture cards showing objects such as plants, clocks, bicycles, and their parts.
Take a classroom walk, and have each student choose one object, name its parts, and explain how they work together.

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A ready-to-print activity worksheet aligned to 1.5.D, with an answer key for the teacher on its own page. No account needed.

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