Launch

🥕 Cafeteria Waste Launch

Content Expertise Academic Mindset Effective Communication Critical Thinking & Problem Solving Collaboration MS-LS2-3 MS-LS2-2 MS-LS2-1 Big Ideas Performance Tasks Real-World Challenge Learning Partners and Clients

Students examine photos, a short teacher-facilitated waste snapshot from the cafeteria, and a simple matter-flow map showing food moving from lunch trays to landfill or compost to soil and plants. As a class, they discuss who is affected by food waste in the school community and urban ecosystem, then sort observations into 'noticed,' 'wonder,' and 'who is impacted' categories on chart paper or sticky notes.

Plan day

Day 1

Duration

20 min

Grouping

Whole Class

Steps

6 steps

Lesson plan

6 steps · 20 min

#	What teachers do
1	Launch the challenge by displaying the driving question, naming the focus on cafeteria food waste in the school community, and inviting students to do a silent quick-look at cafeteria waste photos and/or a live waste snapshot without discussion yet. (5 min)
2	Guide students through an evidence noticing routine: in pairs, have them record specific things they notice in the waste images or snapshot, including types of food scraps, packaging, and patterns of what seems uneaten, then share out a few evidence-based observations. (8 min)
3	Introduce the simple matter-flow map showing food moving from lunch trays to landfill or compost to soil and plants, and facilitate a brief whole-class discussion about where matter goes, what might decompose, and how these pathways affect living and nonliving parts of an ecosystem. (8 min)
4	In small groups, have students sort their ideas onto sticky notes or chart paper under three headings: 'Noticed,' 'Wonder,' and 'Who Is Impacted,' making sure they include people, decomposers, plants, soil, and other parts of the urban ecosystem. (10 min)
5	Lead a gallery walk or chart share where groups read one another's notes, add connections, and identify repeated patterns or high-priority impacts and questions that seem most important for designing a compost system. (7 min)
6	Close with a class debrief in which students name one claim about why cafeteria food waste matters, one question they want to investigate next, and one way this work could connect to growing plants and helping the school community. (7 min)

Preparation (8 items)

Collect or prepare 3-6 clear photos of actual cafeteria waste or set up a brief, safe visual waste snapshot using clean sample materials that represent common lunch leftovers.
Create a simple matter-flow map that shows at least two pathways: lunch tray to landfill and lunch tray to compost to soil to plants.
Post the driving question where all students can see it and prepare a short verbal introduction that connects the activity to the school community and urban ecosystem.
Set up chart paper with the headings 'Noticed,' 'Wonder,' and 'Who Is Impacted' for each group or for whole-class stations.
Prepare sticky notes, markers, and clipboards or notebooks so all students can record observations and questions quickly.
Arrange student groupings in advance to support balanced participation, including strategic pairing for multilingual learners, students who need peer support, and students ready for leadership roles.
Review classroom norms for evidence-based discussion, listening, and respectful disagreement, and prepare sentence stems such as 'I notice…,' 'I wonder…,' and 'This could affect… because…'.
Plan how to capture class questions and impact statements for use in the next activity so students can see continuity across the phase.

Student-facing instructions

You will study real evidence of cafeteria food waste and begin defining the compost design challenge. First, you will look closely at photos or a waste snapshot and record only what you can actually observe. Next, you will use a matter-flow map to think about where food goes after lunch and how landfill and compost pathways affect soil, plants, decomposers, people, and the urban ecosystem. Then, with your group, you will sort your ideas into three categories: 'Noticed,' 'Wonder,' and 'Who Is Impacted' using sticky notes or chart paper. During the share-out, you will read other groups' thinking, add connections, and help identify the most important patterns and questions to investigate next. You will need the displayed images or waste snapshot, the matter-flow map, sticky notes, markers, and your notebook. Your goal is to build a strong set of evidence-based observations, questions, and impact ideas that will help your class design a compost system for the school.

Success criteria

You are successful when you: record at least three specific evidence-based observations from the waste snapshot or photos; contribute at least one sticky note to each category ('Noticed,' 'Wonder,' and 'Who Is Impacted'); identify at least two affected parts of the ecosystem or community, including one living and one nonliving part or one human and one nonhuman impact; use the matter-flow map to explain at least one difference between landfill and compost pathways; and participate in discussion by building on a classmate's idea, asking a relevant question, or giving peer feedback about which impacts or questions matter most.

Facilitator notes

Keep the launch concrete and visual; sixth graders engage more readily when they can react to authentic images and visible materials before abstract discussion. Press for evidence-based language by asking, 'What do you see that makes you say that?' to prevent students from jumping too quickly to unsupported solutions. Emphasize that this is a noticing and question-generating activity, not a day to finalize answers. If students focus only on trash volume, redirect them to ecosystem interactions by prompting with decomposers, soil, plants, and community members. Support participation with sentence stems, color-coded sticky notes, or assigned group roles such as observer, recorder, sorter, and speaker. For students needing more structure, provide icons or word banks for categories like food scraps, soil, worms, plants, cafeteria staff, sanitation workers, and neighborhood environment. For students ready for extension, ask them to compare likely short-term and long-term effects of landfill versus compost. Watch timing during the sort-and-share section; limit share-outs to repeated themes so the closing reflection is not rushed. Capture strong student questions publicly and save all charts for the next activity, where they will help shape problem statements and inquiry directions.

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