Ecosystem Showcase

Overview

This is the final lesson (8 of 8) in the unit "Exploring Local Ecosystems" for Grade 3. In this 45-minute lesson, students will present their collages and food webs to the class. The focus is on reinforcing their understanding of biodiversity, food chains, and energy flow within local ecosystems. Peer feedback and reflection will deepen engagement and consolidate learning. This lesson directly supports the British Columbia Curriculum competency outcomes for Science: Understanding Life Systems.

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Curriculum Alignment

British Columbia Curriculum – Grade 3 Science

• Big Idea:
  Biodiversity in local ecosystems supports the needs of plants and animals.
• Learning Standards:
  • Curricular Competencies:
    • Demonstrate curiosity and a sense of wonder about the world.
    • Use evidence to compare and contrast patterns observed in local ecosystems.
    • Communicate ideas, explanations, and processes in a variety of ways.
    • Collaborate with others to gather and share ideas through discussions and presentations.
  • Content:
    • Basic requirements of plants and animals in local ecosystems for survival (e.g., food, water, air, space, shelter).
    • Interactions between living things through food chains and webs, including producers, consumers, and decomposers.
• Applied Design, Skills, and Technologies:
  • Represent ideas through visual arts (collages) and oral presentations.

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Learning Objectives

By the end of this lesson, students will be able to:

• Present their ecosystem collages and food webs clearly, describing key components (plants, animals, and their interactions).
• Explain the concept of biodiversity and energy flow in an ecosystem using their projects as examples.
• Provide constructive peer feedback, asking questions and recognising strengths and areas for improvement.
• Reflect on how local ecosystems are interconnected and why conserving biodiversity is important.

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Materials Needed

• Completed ecosystem collages and food web diagrams from previous lessons
• Chart paper or whiteboard for recording peer feedback highlights
• Sticky notes or small comment cards for peer feedback
• Markers and pencils
• Timer or stopwatch

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Lesson Duration: 45 Minutes

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Lesson Procedure

1. Introduction and Set Up (5 minutes)

• Welcome students and remind them this is the Showcase of Learning — their opportunity to teach others what they have discovered.
• Briefly reiterate the big ideas: biodiversity, food webs, and energy flow in ecosystems.
• Establish respectful listening and feedback expectations. Model example feedback: “I liked how you explained the role of the producer in your food web."

2. Student Presentations (25 minutes)

• Organise students into small groups of 4 or 5 for presentations to keep the environment supportive and interactive.
• Each student presents their collage and food web (3-4 minutes each), describing:
  • The ecosystem they focused on (local examples encouraged).
  • Key plants and animals (producers, consumers, decomposers).
  • The flow of energy through their food web.
  • Interesting discoveries or surprises they had while making their project.
• Encourage peers to take notes on sticky notes or feedback cards using sentence starters:
  • “I learned that…”
  • “One question I have is…”
  • “You did a great job showing…”

3. Peer Feedback Sharing (10 minutes)

• After presentations in each group, students exchange feedback notes and briefly discuss the comments.
• Invite volunteers to share interesting ideas or feedback highlights with the whole class.
• Teacher records key insights or common questions on the board to revisit later or for future lessons.

4. Reflection and Wrap-Up (5 minutes)

• Lead a whole-class reflection discussion:
  • What did you learn about how plants and animals depend on each other?
  • Why is it important to protect local ecosystems and the biodiversity within them?
• Emphasise the connection between their learning and real-world environmental stewardship.
• Congratulate students on their creativity and presentation skills.
• Optionally, invite students to say one word that describes how they feel about ecosystems or their projects.

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Assessment

• Formative: Observation of student presentations and participation in discussions, noting clarity of explanations and understanding of ecosystem concepts.
• Peer Assessment: Feedback notes focused on comprehension and communication skills.
• Self-Assessment: Reflection responses during wrap-up, verbal or written if desired.

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Differentiation and Extensions

• Support: Provide sentence starters or visual prompts for students who need assistance with oral presentations.
• Extension: Encourage students who finish early to create a short poem or song about their ecosystem to share next class.
• Technology: If available, students may record their presentations using tablets to build digital communication skills.

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Teacher’s Notes

• This lesson capitalises on student ownership of learning by showcasing their creations and verbalising their understanding.
• Peer feedback promotes community and critical thinking, essential competencies in BC’s redesigned curriculum.
• Keep momentum positive and celebrate all contributions; these experiences enhance engagement and confidence in science learning.

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End of Unit 1 “Exploring Local Ecosystems”