Lesson Q4 L1 – Capstone Launch: Food, Heat, and the Future of Our Neighborhood

Lesson Overview

Quarter 4 · Unit H: Community Capstone · Week 31 · AP Environmental Science (Grades 10–12) · Lesson length: 50 minutes

Essential Question: How are heat and urbanization changing food access and growing conditions in our neighborhood, and what can we do about it?

Lesson Focus: Students map heat and food access around the school and launch a capstone that combines their research with a community solution.

Why It Matters: Practice 7 asks students to describe environmental problems and propose solutions; the capstone gives purpose to Quarter 4 content and the symposium.

Source: Original UFE capstone launch; builds on the Seeds of Science food-security and community framing (Chapter 1) and the symposium goal (Lesson 20); aligned to APES Topics 5.10 and 9.5.

Standards & Learning Targets

Standards Alignment

AP Environmental Science CED (Fall 2026) — Topics & Learning Objectives: Topic 5.10 Impacts of Urbanization (Unit 5: Land and Water Use) — EIN-2.M: Describe the effects of urbanization on the environment. • Topic 9.5 Global Climate Change (Unit 9: Global Change) — STB-4.F: Explain how changes in climate, both short- and longterm, impact ecosystems.

AP Science Practices / Skills: 7.A (Environmental Solutions) — Describe environmental problems; 7.B (Environmental Solutions) — Describe potential responses or approaches to environmental problems; 5.E (Data Analysis) — Explain what the data implies or illustrates about environmental issues

AP Big Ideas: EIN — Interactions Between Different Species and the Environment; STB — Sustainability

Student Learning Targets

Learning Targets — students will be able to

Describe effects of urbanization, including impervious surfaces, on local temperature and runoff

Map heat and food-access features near the school

Define a capstone problem statement with community relevance

Key Vocabulary

urbanization · impervious surface · urban heat island · food desert · food access · tree canopy · community asset · problem statement · stakeholder

Materials & Teacher Prep

Low-Cost Option: No infrared thermometer? Use a kitchen probe thermometer on surfaces in the shade of a hand, or compare surfaces by touch with the back of the hand (briefly, safely) and rank them.

Safety: Phoenix heat: normal daily highs climb from about 86 °F in April to about 95 °F in May (NOAA 1991–2020). Schedule field work early, use shade and short blocks, require water for everyone, follow school HeatRisk guidance, and stop at the first sign of heat illness. Sun-heated tools, pavement and metal can burn skin. Sources: CDC, Heat and Your Health; CDC, Sun Safety; NOAA NCEI 1991–2020 Phoenix normals. See the Safety & Fact-Check Log.

Lesson Flow & Timing

Phase 1 · Engage — The Hook

Teacher Talk

PCM: Curiosity. Show two surface readings: asphalt at about 60 °C and shaded garden soil at about 30 °C on the same afternoon (typical spring values). “What makes a 30-degree difference a few steps apart?” (Illustrative data.) Name community asset before the work starts, then return to it in Explain.

Ask Students

“Which surfaces store the most heat?” “Where can families buy fresh produce nearby?” “Who is most affected by heat?”

PCM Differentiation

Thinker Students: Predict a ranking of surfaces by temperature and the features that explain it.

Harmonizer Students: Our garden is a community asset. Who in our neighborhood benefits from it, and who else could?

Phase 2 · Explore — Kagan Cooperative Activity

Cooperative Structure

Kagan structure: Team Stand-N-Share. After collecting data at different locations, teams stand and share one reading at a time, adding new readings to the class map and sitting when all of their data are shared (See the Teaching Reference for the structure’s steps.)

Step-by-Step

• Step 1 — Walk (12 min): Teams measure surface temperatures at assigned locations (asphalt, concrete, grass, gravel, garden soil, under a tree).

• Step 2 — Assets (5 min): Teams note shade, water, food sources, and gathering spaces.

• Step 3 — Stand-N-Share (5 min): Teams stand and share readings one at a time, adding them to the class map, and sit when all of their data are shared.

Teacher Moves During Explore

Supervise safety near streets

Ask “Why is this surface hotter?”

Note time and sun exposure for each reading

Phase 3 · Explain — Direct Instruction

Mini-lesson — Urbanization and Heat. Teacher move: Use class data.

Urbanization changes the environment through land-use change, increased CO₂ from fossil fuels and landfills, and impervious surfaces (Topic 5.10)

Impervious surfaces such as roads and parking lots prevent water from infiltrating soil, increasing runoff

Urban heat island: dark, dry, impervious surfaces absorb and reradiate heat; tree canopy and vegetation cool through shade and transpiration

Climate change increases temperatures, affecting ecosystems and crops (Topic 9.5)

Food access is shaped by distance to stores, transportation, and income; gardens can add fresh food and cool spaces

Key Message: Urbanization and climate change make Phoenix neighborhoods hotter and affect food and water. Our capstone uses our research to propose a real community solution.

Check for Understanding — Ask Students

“Why are impervious surfaces hotter?” “What is an urban heat island?” “What is our capstone problem?”

Phase 4 · Elaborate — Student Product & Differentiation

Student Product

Each team writes a problem statement linking heat, food access, or water to its research findings.

Differentiation

Support (scaffolded entry): Provide a problem-statement frame (“In our neighborhood, ___ affects ___ because ___. We will investigate ___.”).

AP Extension: Calculate the temperature difference between surfaces and rank possible interventions by expected cooling.

Multilingual Learners: Provide a labeled map with icons.

Phase 5 · Evaluate — Closure, Exit Ticket & Assessment

Exit Ticket

1. Report your hottest and coolest surface readings.

1. Explain the difference.

1. Write your problem statement.

Answer Key / Look-Fors: Values with units; albedo, moisture, shade; specific problem statement.

AP Exam Practice

(MCQ) Which change would most likely reduce the urban heat island effect in Phoenix? (A) Replacing trees with asphalt parking (B) Increasing tree canopy and using lighter, reflective surfaces (C) Adding more impervious surfaces (D) Removing shade structures

Answer & Rationale: (B). Shade, transpiration, and reflective surfaces reduce heat absorption (Topic 5.10).

Expanding Circles

How does this connect to… Self — How does heat affect your daily routine? • Classroom — How can our class garden provide cooling? • School — Where on campus is hottest? • Community — How is Phoenix expanding tree canopy and cool pavement? • World — How are cities worldwide adapting to heat?

Formative Assessment

Formative Assessment (sort students by the problem statement linking heat, food access, or water to findings, the exit-ticket surface readings, and the AP item)

Meets (3): Accurate data and specific problem statement.

Approaching (2): Data accurate; problem statement vague.

Not Yet (1): Incomplete data; repeat with support.

Extend & Looking Ahead

Extension: Interview a neighbor or family member about heat and food access.

Looking Ahead: Lesson 4.2 investigates the greenhouse effect and climate data.