The Fall Phenomena Field Guide: Turning Seasonal Curiosity into a Transdisciplinary Unit in 5 Steps

In this Thursday companion to The Leaf Pile Is a Curriculum: Why Fall Phenomena Beat Any Textbook Unit, we move from the why to the how.

Tuesday's big idea was simple: fall is not merely a backdrop for learning. It is a living, changing system full of questions. Leaves are changing color. Daylight is shrinking. Soil is becoming a habitat for decomposition. Animals are adjusting their behavior. Families and communities are responding to cooler weather, harvest cycles, and changing routines.

What if we treated those observations as the beginning of a meaningful unit rather than a seasonal distraction?

A strong fall phenomena unit gives students the opportunity to notice, investigate, explain, design, and contribute. It activates all five PAST Hacking School pillars:

• Student Agency: Learners choose questions, roles, and ways to demonstrate understanding.

• Culturally Relevant Teaching and Learning: Students connect seasonal change to family practices, community knowledge, and local histories.

• Mastery-Based Learning: Students revisit skills and concepts as their evidence and explanations become more sophisticated.

• Transdisciplinary Learning: Science, mathematics, literacy, art, technology, and social studies work together around a meaningful context.

• Problem-Based Learning: Students use what they discover to respond to a real need, question, or challenge.

Together, we can reimagine the fall unit as a collaborative investigation: one that begins with a leaf pile and leads students toward systems thinking, confidence, and agency.

Step 1: Choose a phenomenon students can actually observe

Begin with something visible, local, and changing.

Invite students outside with a simple prompt:

> “What is different here than it was two weeks ago?”

Avoid introducing the explanation too soon. The goal is to create space for students to notice patterns before they receive formal vocabulary.

Possible phenomena include:

• Why some trees change color before others

• Why the schoolyard has more leaves after a windy day

• Why daylight seems to disappear earlier

• What happens beneath a pile of wet leaves

• Why some animals become less visible in the fall

• How changing temperatures affect people, plants, and school routines

For elementary learners, the phenomenon might be a tree near the playground. Students can sketch it, describe its colors, measure its shadow, and record what changes each week.

Middle school students might compare two nearby habitats, such as a wooded area and a maintained field, to investigate differences in leaf litter, temperature, or insect activity.

High school students might study a local fall pattern using multiple forms of evidence: temperature data, daylight hours, plant observations, and community interviews.

This first step establishes student agency. Instead of asking students to complete an identical activity, ask them to identify what deserves closer attention.

Step 2: Build a shared field guide of questions and observations

Create a class field guide that grows throughout the unit. Each student or team contributes observations, questions, sketches, measurements, quotations, or photographs taken during fieldwork.

A useful entry includes:

1. I notice…

2. I wonder…

3. I think this might be happening because…

4. I need more evidence about…

This routine supports scientific observation while also strengthening literacy and metacognition. Students learn that a question is not a failure to understand. It is a tool for directing attention.

At the elementary level, students can classify leaves by shape, color, or texture and create picture graphs. They might interview a family member about a fall tradition or a seasonal food.

Middle school students can develop a shared phenology calendar, recording first frost, leaf color changes, leaf drop, bird activity, and daily temperatures. They can compare their observations with historical records and discuss what the data does, and does not, show.

High school students can create a more rigorous field protocol. They might define sampling locations, control variables, calculate averages, and evaluate their data's limitations.

This is also an opportunity for culturally relevant teaching and learning. Families, communities, farms, neighborhoods, and Indigenous traditions hold seasonal knowledge. Invite students to consider: Who notices seasonal change in our community? What knowledge has been passed down? Which seasonal signals matter to different people?

The goal is not to treat every cultural practice as interchangeable. It helps students understand that knowledge is situated, lived, and connected to place.

Step 3: Connect observations to disciplinary mastery

Now begin building explanations.

A transdisciplinary unit does not mean adding a decorative art project to a science lesson. It means letting one meaningful problem create authentic reasons to use several disciplines.

Consider a phenomenon such as changing daylight.

Elementary

• Science: Observe and record daylight patterns.

• Math: Represent sunrise or sunset data with a graph.

• ELA: Write an evidence-based explanation.

• Art: Create a visual “daylight wheel.”

• Student agency: Choose whether to present learning as a poster, model, or short teaching demonstration.

Middle school

• Science: Model Earth’s tilt and the changing angle of sunlight.

• Math: Analyze daylight data and identify trends.

• ELA: Develop a claim supported by evidence and reasoning.

• Social studies: Investigate how seasonal light affects community routines or cultural practices.

• Mastery-based learning: Revise the model after identifying misconceptions.

High school

• Physics: Calculate solar angle or compare energy received at different times of year.

• Biology: Examine how seasonal timing affects plant and animal interactions.

• Data science: Analyze local and regional patterns across multiple years.

• Civics or economics: Consider implications for agriculture, energy use, or public planning.

• Problem-based learning: Recommend a community response to a seasonal challenge.

Research on teaching seasons has consistently found that students may hold persistent misconceptions, including the belief that seasons are primarily caused by Earth’s distance from the Sun. Students need opportunities to construct, test, and revise models using evidence rather than simply memorizing the correct explanation (Atwood & Atwood, 1996; Trumper, 2001).

Your role is to make the thinking visible. Ask:

• What does our evidence support?

• What remains uncertain?

• How has our model changed?

• What would we need to observe next?

Step 4: Turn the investigation into a design challenge

Once students understand the phenomenon better, invite them to design something that helps a real audience.

This is where design thinking can move the unit from explanation to contribution:

1. Empathize: Who experiences this seasonal change, and what do they need?

2. Define: What specific problem or opportunity can we address?

3. Ideate: What are several possible responses?

4. Prototype: What can we make quickly and affordably?

5. Test and revise: What does feedback and evidence tell us?

Elementary students might design a weather information station for younger children, a safe leaf-collecting system, or a sign explaining why leaves change color.

Middle school students might create a schoolyard phenology display, a low-cost frost alert system for a garden, or a student-friendly guide to local fall habitats.

High school students might prototype a sensor-based monitoring system, develop a proposal for managing leaf litter as a compost resource, or create a public communication campaign about changing seasonal patterns.

The design challenge should remain connected to the original phenomenon. Students are not simply making something attractive. They are using evidence to respond to a need.

That distinction matters. It is the heart of problem-based learning.

Step 5: Share learning publicly and return to the original question

A strong unit ends by returning to the question that launched it.

Ask students to revisit their first field guide entries:

• What did we think at the beginning?

• What do we understand now?

• Which evidence changed our thinking?

• What questions remain?

• Who could use what we learned?

Public sharing can take many forms:

• A family field guide

• A schoolyard exhibition

• A student-led presentation

• A community data walk

• A podcast or short documentary

• A proposal to school leaders

• A collection of models and prototypes

For younger students, the audience might be another class or families. Middle school students might present to facilities staff, gardeners, or community members. High school students can prepare a formal briefing for a local organization or school decision-maker.

This final step supports mastery-based learning because students demonstrate understanding in context. It also reinforces the larger purpose of school: learning that helps us participate more thoughtfully in the world.

Lesson adaptation prompt

Choose a lesson you already teach between September and November. It might focus on weather, plant life cycles, data, descriptive writing, ecosystems, or Earth and space science.

Then ask:

> How could I replace the worksheet’s example with a phenomenon students can observe in our own schoolyard or community?

Use these questions to adapt the lesson:

• What will students notice before I explain?

• Which question could students help generate?

• Where can students collect authentic evidence?

• Which Hacking School pillar is already present?

• Which pillar needs strengthening?

• What product, model, or decision could make the learning useful to someone else?

Before and after: A classroom example

Before:
A fifth-grade class completes a textbook lesson on plant life cycles. Students label a diagram, answer comprehension questions, and complete a vocabulary quiz.

After:
Students investigate why three trees near the school change color at different times. Teams observe the trees weekly, record temperature and daylight, classify leaf characteristics, interview a groundskeeper, and research the role of pigments and environmental conditions.

They use mathematics to graph changes, literacy to write evidence-based explanations, and art to create botanical field illustrations. Finally, they design a guide for younger students explaining how to observe seasonal change responsibly.

The standards have not disappeared. They now connect to a question students can see, touch, measure, and explain.

Fall Phenomena Field Guide

Print one guide for each student or team.

Fall Phenomena Field Guide

Phenomenon we are investigating:

Place and date of observation:

I notice:

I wonder:

Our current explanation:

Evidence we collected:

• Observation: ______________________________________

• Measurement: _____________________________________

• Interview or community knowledge: _________________

• Text, image, or dataset: ___________________________

Our thinking changed because:

Design opportunity:
Who could this learning help?

What need, question, or problem could we address?

Our prototype, product, or recommendation:

Feedback we received:

What we revised:

Final reflection:
What does fall teach us about change, connection, and our responsibility to place?

A leaf pile is small enough to overlook and complex enough to transform a unit. When we give students the tools to observe carefully, ask better questions, and design with purpose, seasonal curiosity becomes more than a lesson theme. It becomes a pathway into confident, connected, future-ready learning.

References

Atwood, R. K., & Atwood, V. A. (1996). Preservice elementary teachers’ conceptions of the causes of seasons. Journal of Research in Science Teaching, 33(5), 553–563.

Cleland, E. E., Chuine, I., Menzel, A., Mooney, H. A., & Schwartz, M. D. (2007). Shifting plant phenology in response to global change. Trends in Ecology & Evolution, 22(7), 357–365.

Design Council. (2005). The “double diamond” design process model. Design Council.

National Research Council. (2012). A framework for K–12 science education: Practices, crosscutting concepts, and core ideas. The National Academies Press.

NGSS Lead States. (2013). Next Generation Science Standards: For states, by states. The National Academies Press.

Schwartz, M. D. (Ed.). (2013). Phenology: An integrative environmental science. Springer.

Trumper, R. (2001). A cross-age study of junior high school students’ conceptions of basic astronomy concepts. International Journal of Science Education, 23(11), 1111–1123.