Recycle vs Compost

Unit Information

• Unit Title: Wiggly Worm Wonders (Lesson 10 of 10)
• Grade Level: Kindergarten
• Subject: Science
• Duration: 45 minutes
• Class Size: 30 students
• Location: California, USA

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Learning Goal

Students will differentiate between recyclable and compostable materials by sorting items into appropriate bins and creating a visual poster illustrating the differences between recycling and composting.

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Standards Alignment (CA NGSS & CA ELD)

• CA NGSS (Next Generation Science Standards) K-ESS3-3:
  Communicate solutions that plants and animals, including humans, use to help them survive.
  (Applying to how compost helps soil, recycling helps Earth)

• CA ELD Standards (Emerging/Expanding Levels):
  Use visual aids and bilingual labels to increase comprehension.

• CA Common Core ELA (Kindergarten):
  SL.K.4 Speak audibly and express thoughts, feelings and ideas clearly.

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Materials Needed

• Two large bins labelled Recycle / Reciclar and Compost / Compostar with visual pictures
• Laminated picture cards of common classroom items (e.g., paper, apple core, plastic bottle, banana peel, cardboard, egg shell)
• Poster board, markers, glue sticks
• Pre-made bilingual labels with images for each item
• Picture book or short video recap of recycling and composting (optional, 3-5 minutes)
• Worm puppet or plush toy (from prior lessons for connection)
• Chart paper with a two-column heading: "Recycle / Reciclar" and "Compost / Compostar"

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Lesson Outline

1. Warm-Up / Review (5 minutes)

• Gather students in a circle on the carpet.
• Use the worm puppet to "ask" students:
  "Can you remind me what happens to scraps in the compost? And what kind of trash goes in the recycling bin?"
• Show a quick picture flash of recyclable vs compostable items with bilingual labels for reinforcement.
• Connect responses to the importance of helping our planet — linking to prior "Wiggly Worms" lessons about soil and earthworms.

2. Interactive Sorting Activity (15 minutes)

• Divide students into 3 groups of 10 (rotating if needed) around the bins and picture cards.
• Present picture cards one by one; students decide which bin each item belongs to:
  • ELL support: cards have images + bilingual labels.
  • Teacher/model sorts first 2-3 cards, verbalizing decision using simple sentence frames, example:
    "This is a banana peel. We put it in the compost bin because it will become soil."
    “Esta es una cáscara de plátano. La ponemos en el compost porque se convierte en tierra."
• Encourage students to say the item name and the bin aloud (modelled by teacher).
• Rotate groups so all students get a chance to sort and discuss.

3. Poster Creation (15 minutes)

• In mixed ability pairs, students will create a “Recycle vs Compost” poster.
• Provide large poster board split into two sides: Recycle / Reciclar and Compost / Compostar.
• Students glue or draw items in the correct column, using picture cards and markers.
• Teacher circulates, asking questions to reinforce knowledge, supports ELL by prompting use of bilingual terms.
• Challenge advanced students to verbally explain their choices to a peer or teacher.

4. Group Sharing and Reflection (7 minutes)

• Have volunteers from pairs share one thing they added to each side and explain why.
• Teacher uses positive reinforcement and repeats key vocabulary bilingually.
• Connect back to the worm puppet:
  “Thank you for helping keep our earth clean and healthy for worms and all living things!”
• Briefly summarise that recycling turns things into new items, composting turns food scraps into soil.

5. Closing and Clean-Up (3 minutes)

• Prompt students to help clean crafting supplies.
• Remind students that they can practise recycling and composting at home and school.
• Give a “Wiggly Worm Helper” sticker or stamp to each student for completing the unit.

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Differentiation & Accommodations

• For ELL Students: Bilingual labels, visual picture cards, verbal modelling with sentence frames in English and Spanish.
• For students with fine motor challenges: Partnered drawing or gluing help during poster activity.
• For advanced students: Encourage verbal explanations in full sentences or drawing additional items from memory.

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Assessment

• Formative: Observation during sorting activity noting correct classification and use of vocabulary.
• Summative: Completed poster demonstrating understanding of differences between recycling and composting.
• Oral: Listening to students explain their choices during sharing.

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Extension Ideas (Optional)

• Take the class on a "Bin Walk" around the school to see actual recycling and compost bins.
• Incorporate a worm-compost sensory bin to explore soil texture and decomposition.
• Start a simple classroom compost container or recycling station for ongoing practice.

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Teacher Reflection

• Did students engage with the sorting activity and use new vocabulary?
• Were visual and bilingual supports effective for all learners?
• Is the class able to articulate the environmental benefits of composting and recycling?
• How can future lessons further integrate hands-on and language-rich environmental activities?

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This final lesson connects foundational science concepts with CA curriculum frameworks and embodies highly interactive, language-supported learning for young students — empowering them as environmental stewards right from the start!