Platypus life stages

Overview

In this second lesson of the unit, students explore and organise the four stages of the platypus life cycle: egg, hatchling, juvenile, and adult. They will then create a clear visual life-cycle representation.

Learning intentions

• Students will identify the four stages of the platypus life cycle.
• Students will describe key features of each stage in age-appropriate language.
• Students will represent the life cycle using a visual diagram.

Success criteria

• I can name the four stages: egg, hatchling, juvenile, adult.
• I can describe what happens in each stage using simple sentences.
• I can create a visual representation that shows the stages in the correct order with labels.
• I can check my diagram against the class success checklist.

Curriculum links

• Science understanding: living things have life cycles that include stages of growth and change.
• Science as a human endeavour: using evidence and reliable information sources to build a simple model.
• Science inquiry skills: observing, recording, and communicating ideas using appropriate representations.
• Literacy in science: using subject-specific words to explain processes clearly.

Lesson structure (60 minutes)

1. 4 min – Hook discussion: Use the introduction slides to show a striking “life cycle story” image of a platypus life. Ask: “How would a scientist explain this story from start to finish?” Students turn and talk, then share 1–2 ideas.

2. 8 min – Teach key ideas (stages overview): Continue with the introduction slides. Teach the four stages (egg → hatchling → juvenile → adult) using short prompts: What is happening? What would a platypus look/need at this stage? Model one stage description as a complete sentence.

3. 10 min – Guided note-taking (with sentence starters): Refer to the introduction slides for a “fill in the blanks” style model. Students complete a brief, teacher-led set of notes in the lesson workbook area:

• Egg: …
• Hatchling: …
• Juvenile: …
• Adult: … Circulate to check understanding and correct misconceptions immediately.

4. 3 min – Check-in against common errors: Show the introduction slides “Misconception spotlight” (e.g., mixing up order; writing only one fact per stage). Students give a thumbs-up/down and explain why.

5. 20 min – Main task: create a life cycle visual: Distribute the life-cycle visual worksheet to students. Use the introduction slides to remind them of the required elements: correct order, labels, and one key description per stage. Students create their diagram (drawings, arrows, and labels). Teacher provides targeted feedback during the build.

6. 10 min – Gallery walk + peer feedback: Students rotate to two classmates’ diagrams. Use the introduction slides to guide peer feedback with two prompts:

• “One thing you did well…”
• “One suggestion to improve…” Return to desks.

7. 5 min – Plenary: verbal summary: Use the introduction slides for a rapid “stage reveal” slide. Students say the stage name and one feature for the next stage in order (whole class chant supported by teacher).

Resources

• the introduction slides (hook image, stages mini-lessons, misconception spotlight, gallery prompts, plenary “stage reveal”)
• the life-cycle visual worksheet (diagram template with labels and short description lines)
• Coloured pencils/markers for diagrams
• Student pencils and erasers
• Visual word bank poster (egg, hatchling, juvenile, adult + simple action words like “grows”, “develops”, “has”, “learns”)
• Timer for task pacing
• Teacher checklist for success criteria (simple yes/no markers)
• Access to a teacher-provided “fact card” set (optional printouts for key facts if needed)

Assessment

• Formative: teacher observation during guided note-taking and the main diagram build (checking stage order and stage descriptions).
• Formative: gallery walk feedback and listening during the stage-reveal plenary.
• Summative for this lesson: the completed visual representation on the life-cycle visual worksheet using the success criteria checklist.

Differentiation

• Support: provide a graphic organiser template look-alike on the life-cycle visual worksheet with sentence starters (e.g., “In the egg stage, the platypus …”). Offer guided notes using the introduction slides.
• Support (visual learners): allow “match-and-label” approach first (students place stage labels, then add one sentence).
• Extension: challenge students to add a “needs at this stage” detail (e.g., protection, growth, learning to survive) and include an extra arrow showing “change/growth”.
• EAL/SEN: use simplified model sentences, a word bank, and accept oral explanations recorded by the teacher for students who struggle with writing length.