Third Grade · Science · week 17

Life-cycle wheel project

Design and build a life-cycle wheel diagram for a chosen organism, correctly ordering and labeling every stage in a repeating loop.

You have learned that life cycles repeat: after reproduction, a new generation begins the same pattern again. This week, you build your own life-cycle wheel, a circular diagram that shows the stages of an organism's life cycle in order, connected in a loop, because a life cycle does not simply end, it cycles back to the beginning with a new generation.

A circle is the right shape for this because it shows that the pattern continues on, unlike a straight line, which would suggest an ending.

📋 For the teacher
Teach it (10–15 min):
  • Build the wheel together for real, using paper, drawing or writing each stage, and optionally a brad fastener in the center so an arrow or pointer can spin.
  • Have the child choose their own organism rather than only using the butterfly example, to practice applying the idea independently.
  • Check that the stages are both correctly ordered and connected in a full loop, not a line.
  • Ask which stage they think lasts the longest in real life, as a fun extension question.
Talk about it:
  • Why is a circle a better shape than a straight line for showing a life cycle?
  • Which stage on your wheel do you think lasts the longest?
  • What would happen to the diagram if you left out a stage?

Mastery looks like: They create an accurately ordered, correctly labeled life-cycle wheel for a chosen organism, shown as a repeating loop.

Common stumbles: Drawing the stages in a straight line instead of a loop, or leaving out or misordering a stage.

Homework for this lessonType it, write it with a stylus, or print it for pencil & paper.open →
Records attendance + 15 min of Science for this learner.
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