3-LS1-1
The standard
Develop models to describe that organisms have unique and diverse life cycles but all have in common birth, growth, reproduction, and death.
Next Generation Science Standards
What this standard means
Students need to make and use models that show how different living things move through a life cycle. They should compare examples, like a butterfly, frog, chicken, bean plant, or sunflower, and see that the steps may look different but follow the same broad pattern.
Mastery looks like a student drawing or arranging a clear cycle with labels for birth, growth, reproduction, and death, then explaining similarities and differences across organisms. Students often get stuck thinking all life cycles have the same number of stages, or that a cycle is just a straight timeline.
Ways to teach it
- Have students cut out picture cards of a frog, butterfly, and sunflower life cycle, then arrange each into a labeled cycle diagram.
- Ask students to write: How is a butterfly life cycle different from a sunflower life cycle, and what do they both have in common?
- Show four mixed-up life cycle images and ask students to number them, label the stages, and explain one choice.
- Connect to a garden by having students track a fast-growing plant from seed to flower using a weekly observation journal.
Plan a lesson for 3-LS1-1
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Related standards
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