Compare structure-function explanations
Compare structure-function explanations using supplied evidence and a solved model.
About 18 minutes, plus any extended practice
Supplied materials
- All measurements and observations below are supplied classroom examples. They are not data from actual learners or a claim about a particular real site.
- Paper, drawing space or a browser document.
- Reference card A: the physical part. Reference card B: what the part does.
- Assessment case 1: Which scientific label fits the specifically described step or feature? Supplied case: A hard outer shell.
- Assessment case 2: Which scientific label fits the specifically described step or feature? Supplied case: Shell protects soft tissues.
- Assessment case 3: Which scientific label fits the specifically described step or feature? Supplied case: Impact tests show fewer modeled dents.
- Assessment case 4: Which scientific label fits the specifically described step or feature? Supplied case: Model cannot show lifelong survival.
- Assessment case 5: Which scientific label fits the specifically described step or feature? Supplied case: A leaf’s broad surface.
- Assessment case 6: Which scientific label fits the specifically described step or feature? Supplied case: Broad area can capture incoming light.
Learn the idea
A claim should name the part and explain its function. A label alone is not an explanation. Supplied descriptions distinguish direct observations from inferred functions and missing evidence.
Structure means the physical part. Function means what the part does. Evidence means observation supporting the claim. Limitation means what the record cannot establish.
For structure, look for the clue “the physical part.” For function, look for “what the part does.” More than one process can happen in a real situation. Answer about the one described in this question.
- Read or listen to the four science words and what each means. Say how the first two differ.
- Choose two of the short cases. Point to the clue that helps you choose a science word for each one. You may draw or say your answer.
- Answer each practice question. Say which clue helped you, then check the explanation.
- Use the extra task to make two examples that show different science words. Draw or say what makes each one fit.
See the method in action
Worked reference-card problem: a card states “the physical part”; a second states “what the part does.” The first fits structure and the second fits function. The reason is the described function or change, not the order of the cards or a favorite name. If their descriptions exchange places, their category labels exchange too. Keep the supplied descriptions attached to the correct case.
Check your reasoning
Your answer is temporary and is not saved to an account. Download your current answer before leaving or reloading. Written work on paper or in another app stays in your own file.
Helpful tips
- Use the feature “the physical part” to justify structure; do not sort by the name alone.
- Distinguish function (what the part does) from a different process occurring in the same situation.
See the answer and explanation
structure
The answer is structure. In the notes, it means “the physical part.” A claim should name the part and explain its function. A label alone is not an explanation. Supplied descriptions distinguish direct observations from inferred functions and missing evidence.
Take it further
Create one new case showing structure and one showing function. Expected: the first explicitly shows “the physical part”; the second explicitly shows “what the part does.” Explain the distinction by drawing, speaking or writing. A label without a matching feature is incomplete.
Nothing here is saved to an account or sent to a teacher. The answer download includes your current choice and any checked feedback. It does not include choices from the separate More practice section. Download that section separately.
More practice: try new cases
Choose an answer for each problem. Explain your method on paper, then use the feedback to decide what to revisit.
Your choices are temporary. Feedback appears after you check all the answers.
Nothing here is saved to an account or sent to a teacher. Keep your own notes or download them before leaving. The score describes these questions; it does not certify subject mastery.
Check the subject sources
These LifeStarter passages, scenarios and exercises are authored for this Academy with AI assistance and review. External resources keep their publishers’ terms. A grade label suggests a starting level; it does not establish alignment with your school’s complete requirements.