Texas TEKS 2.5.G

Science2nd GradeRecurring themes and concepts

The Standard

describe how factors or conditions can cause objects, organisms, and systems to either change or stay the same.

Texas Essential Knowledge and Skills for Science

Teacher's field guide

What Students Need to Do: Students compare an object, living thing, or simple system under two different conditions. They name the condition and describe what changed or remained the same.
What Mastery Looks Like: Students use observations to connect a condition, such as heat, water, light, or force, to an outcome. They can also recognize when a condition produces no visible change.
Common Misconceptions: Students may assume every condition causes an immediate, visible change. They may name what happened without identifying the cause, or think an unchanged result means the test failed.
How to Assess It: Give students pictures of two equal ice cubes, one placed in sunlight and one in shade. Ask them to name the condition and predict what will change.

Lesson moves

Place equal ice cubes in warm and cool locations, then record melting with drawings and time labels.
Show before-and-after plant photos and ask, “Which condition may have caused the change, and what evidence supports your answer?”
Match condition cards, such as heat or water, to outcome cards, then explain each match to a partner.
Examine a classroom terrarium and list conditions that help it remain stable or cause it to change.

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