Texas TEKS 2.5.F

Science2nd GradeRecurring themes and concepts

The Standard

describe the relationship between structure and function of objects, organisms, and systems

Texas Essential Knowledge and Skills for Science

Teacher's field guide

What Students Need to Do: Students identify parts of an object, organism, or system and tell what each part does. They explain how a part’s shape, material, or location helps it work.
What Mastery Looks Like: Students connect a specific feature to its job using clear evidence. They can predict what might happen if that feature changed or was removed.
Common Misconceptions: Students may name a part and its job without explaining the connection. They may think parts work alone or that every feature has only one job.
How to Assess It: Show a picture of a duck’s foot. Ask students to label one feature and explain how it helps the duck survive or move.

Lesson moves

Give pairs tongs, spoons, and sponges, then ask them to explain how each tool’s shape or material supports its job.
Ask students to write: How does a bird’s beak help it eat, and which feature makes that possible?
Play a matching game with picture cards of roots, wings, wheels, and handles paired with cards showing their jobs.
Examine a backpack and explain how its straps, zipper, pockets, and handle help it carry and protect supplies.

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