World Systems

Overview

In this second lesson of the “Mastery & Expression” unit, students explore how ecological, economic, and social systems work together to affect people and environments. They practice explaining observations and begin linking systems to their own ideas and identities.

Learning intentions

• Students will be able to describe key features of ecological, economic, and social systems.
• Students will be able to identify cause-and-effect relationships within a system.
• Students will be able to use evidence from a simple model or scenario to support a claim.
• Students will be able to begin expressing how a system connects to personal or community identity.

Success criteria

• I can name examples of ecological, economic, and social systems in everyday life.
• I can explain what a system is and how parts affect each other.
• I can tell or write a reason supported by evidence from our scenario/model.
• I can participate respectfully in group discussion and listen to a partner’s ideas.

Curriculum links

• Next Generation Science Standards: developing and using models to represent systems; using cause-and-effect reasoning.
• Common Core State Standards for Science and Technical Subjects: reading informational texts, using evidence to write/speak, and conducting structured discussions.
• Common Core writing: producing short informative/explanatory pieces with a clear focus and supporting details.
• Common Core speaking and listening: collaborative discussion and reporting with details.

Lesson structure (60 minutes)

1. 0–5 min: Warm start—“System Snapshots”

• Teacher shows 3 quick teacher-made cards/scenes: an ecosystem (garden or pond), an economy (store or farm market), and a social system (school/community rules).
• Students each choose one card and say one thing they notice (one sentence for Year 5; one short phrase for Year 1).

2. 5–15 min: Mini-lesson—What is a system?

• Using a simple drawn circle-and-arrows diagram, teacher explains: systems have parts, and parts interact.
• Year 1: focuses on “parts” and “what changes when something happens.”
• Year 5: focuses on “inputs/outputs” and cause-and-effect between parts.
• Students complete a 1-minute “turn-and-talk” to restate the definition in their own words.

3. 15–30 min: Group activity—Model a world system

• Provide a shared scenario sheet (teacher-created) such as “A new community garden” that includes:
• Ecological: soil, plants, insects, water
• Economic: tools, seeds, time, food sharing/trade
• Social: roles, rules for watering, cooperation
• Students work in pairs to build a “system web” poster on shared paper:
• Year 1 creates a simple poster with three pictures and 3 arrows (what helps / what changes).
• Year 5 builds a more detailed web with labels and at least 6 connections, choosing their focus system (ecological, economic, or social) for deeper work.
• Teacher circulates with guiding questions that prompt evidence-based explanations.

4. 30–42 min: Evidence reasoning—Cause and effect

• Teacher poses two “system changes,” such as:
• “The watering schedule changes” or “A new rule is introduced for sharing food.”
• Students write/dictate or record responses:
• Year 1: “If ___ happens, then ___ will change” (one cause-and-effect sentence).
• Year 5: two-part explanation: claim + evidence from the scenario/web (at least two sentences).
• Teacher prompts students to mention at least one system part and one interaction.

5. 42–55 min: Mastery & Expression—Quick share and debate prep

• Set a structured sharing routine:
• Each student explains their chosen system, one connection, and one effect.
• Year 5 practices a “micro-debate” starter sentence: “I think ___ because ___, and this affects ___.”
• Year 1 practices a calm “agree/disagree” with a reason: “I agree because I noticed ___.”
• Teacher ensures both students respond to at least one partner idea using discussion sentence frames.

6. 55–60 min: Exit ticket—Identity connection

• Students complete a brief exit:
• Year 1 (draw or dictate): “This system is like my ___ because ___.”
• Year 5 (short paragraph or sentence strips): “This system connects to my identity because ___.”
• Collect for review and use to plan Lesson 3.

Resources

• Teacher-made scenario sheet for “community garden” (or similar daily-life system)
• Pre-cut picture cards (plants/animals/water; tools/seeds/time; rules/roles/community)
• Chart paper or poster boards; markers and crayons
• Sticky notes for adding arrows and labels
• Simple system diagram template (circle-and-arrows)
• Sentence frames for Year 1 and Year 5 (cause/effect; claim/evidence; agree/disagree)
• Timer for structured talk
• Clipboard or paper for exit tickets

Assessment

• Teacher observation during model-building: identifies whether students can name system parts and interactions.
• Review of cause-and-effect responses: checks accuracy and use of evidence from the scenario.
• Exit tickets: gauges ability to connect system learning to personal/community identity.

Differentiation

• Year 1 support:
• Offer picture choices, color-coded arrows (less reading demand).
• Provide oral recording options (teacher scribe) and sentence frames with fewer blanks.
• Keep connections limited to 3–4 arrows to reduce cognitive load.
• Year 1 challenge:
• Ask for one “why” word: “because” linked to a visible part of their web.
• Year 5 support:
• Provide a labeled word bank for inputs/outputs and interaction verbs (affects, depends, changes).
• Allow sentence strips for claim/evidence to ensure structure before writing.
• Year 5 extension:
• Ask them to choose one system and predict a second change (what might happen next) using cause-and-effect.
• Add an “alternative explanation” prompt: “What is another reason this could change?”
• EAL/SEN strategies:
• Use consistent routine and visual supports (icons, diagrams, word banks).
• Pair students with a shared role (builder vs. explainer) and allow extra wait time.
• Accept oral responses and gradually increase writing expectations.