Body Systems Map

Overview

Today’s inquiry asks: how does the human body work from the smallest units (cells) up to organ systems? You will learn to organise information at multiple levels (cell → tissue → organ → organ system) and connect that organisation to cellular needs like getting nutrients and oxygen.

Learning intentions

• WALT explain how the human body is organised from cells to tissue to organs to organ systems.
• WALT describe how organ systems support body processes that meet cellular needs (e.g., oxygen and nutrients).
• WALT use a flow-model diagram to show relationships between organisation levels and system functions.
• WALT justify, using evidence, how organisation helps cells survive and function.

Success criteria

• I can correctly sort examples into cell, tissue, organ, and organ system categories.
• I can build and label a flow model from cells to organ systems and include functions for digestive, respiratory, and circulatory systems.
• I can find one clear function for each system using provided texts and prompts.
• I can write a short CER explaining how organisation at body level supports cellular needs.

Key vocabulary

• cell, tissue, organ, organ system
• organ (and system) function
• digestion, gas exchange, transport, respiration (as a process)
• nutrients, oxygen, carbon dioxide
• bloodstream, circulatory, respiratory
• model, evidence, reasoning (CER)

Curriculum links

• Biological Science: Body Systems progression (cells to organ systems; functions supported by body organisation).
• Te Mātaiaho Science: Body systems learning that builds from basic body parts and senses to organ systems and how they support body processes.
• Science capabilities: using evidence to explain patterns; interpreting diagrams and communicating scientific ideas.

Lesson structure (60 minutes)

1. 0–5 min · Hook (brief). Teacher reads a short “mystery case” scenario: “A student’s cells need oxygen and glucose, but energy drops when breathing or digestion is disrupted.” Students turn-and-talk: “Which levels of organisation are involved, and what system functions would be affected?”

2. 5–12 min · Setup + success criteria check. Teacher shows the worksheet structure (sorting → flow model → text research → CER) and highlights what “success” looks like using the success criteria. Students identify which task they will start first in their groups/independently.

3. 12–25 min · Independent Task 1: Sorting (cells → systems). Teacher prompts: “Use the scenario cards to decide the organisation level, then justify your choice using the definitions on the worksheet.” Students complete a sorting table for cell, tissue, organ, organ system, using scenario cards (e.g., “single specialised cell types,” “a sheet of similar cells,” “an organ performing a job,” “multiple organs working together”).

4. 25–40 min · Independent Task 2: Diagram-building flow model. Teacher reminds: “Your model must show the organisation pathway and connect it to cellular needs.” Students construct a flow model from cells to organ systems and label the functions of at least digestive, respiratory, and circulatory; include arrows that link cellular needs (oxygen, nutrients) to system functions (gas exchange, digestion, transport).

5. 40–49 min · Independent Task 3: Quick reading/research from excerpts. Teacher provides short text excerpts (printed) plus prompts for each system (digestive, respiratory, circulatory, plus one additional system on the sheet such as excretory or muscular depending on your handout). Students read and complete a “System → Function → Cellular need supported” box using only information from the excerpts.

6. 49–57 min · Independent Task 4: Reasoning (CER). Teacher gives the question: “How does the body’s organisation from cells to organ systems support body processes at the cellular level?” Students write a short CER: Claim about organisation supporting cellular processes, Evidence from their sorting/diagram/text boxes, Reasoning that links organisation to cellular needs (oxygen/nutrients/transport).

7. 57–60 min · Exit ticket (quick). Students answer 3 prompt items: one organisation-level example correctly classified, one function identified for a system, and one sentence of reasoning linking organisation to cellular needs.

Resources

Teacher prep list

• Print scenario cards (mixed set) and organisation-level definition sheet
• Print Task 1 sorting worksheet (tables for cell/tissue/organ/system) and card cut-outs
• Print Task 2 flow-model diagram template with blank labels and arrow space
• Print Task 3 short text excerpts for each system + prompts
• Print Task 4 CER worksheet (claim/evidence/reasoning lines) and annotated checklist
• Print Exit ticket slips (3 items)
• Word bank + sentence starters sheet (for support)
• Timer and a wall/display of success criteria

Student materials list

• Completed worksheet pack: Sorting, Flow model, Reading prompts, CER, Exit ticket
• Pencil/pen, ruler, coloured pencils (optional for system labels)
• Highlighters (optional for identifying key functions in texts)
• Reference card: cell/tissue/organ/system definitions and key vocabulary

Assessment

• Formative check 1 (sorting): teacher circulates using a quick look-for checklist (correct category + reason).
• Formative check 2 (flow model): teacher checks presence of correct labels and at least digestive/respiratory/circulatory functions linked to cellular needs.
• Formative check 3 (CER): teacher uses a rubric-lite glance (claim present, evidence referenced, reasoning explains “because organisation supports cellular processes”).
• Exit ticket: teacher uses to confirm alignment with all success criteria (sorting + functions + reasoning).

Differentiation

Support

• Provide a word bank for each task (organisation level words, system function verbs).
• Provide sentence starters for CER and for “System → Function → Cellular need” boxes.
• Offer an example partially completed flow model for students to mirror.
• Reduce cognitive load: fewer scenario cards (still covering all levels) for students who need it, while ensuring they still sort at cell/tissue/organ/system.

Extension

• Systems interaction case study: students complete a short “what if?” scenario (e.g., “If oxygen uptake decreases, what happens to energy production in cells and how do digestive and circulatory systems respond/need to compensate?”).
• Challenge prompt: “Choose two systems and describe one cause-and-effect chain from system function to cellular outcome.”

EAL/SEN considerations

• Allow students to use diagrams/labels plus key words in addition to full sentences in Task 2.
• Provide excerpts in clear, readable font; pre-teach or gloss “nutrients,” “gas exchange,” and “transport.”

Notes for teaching (quick pacing guidance)

• If sorting outcomes are mixed, pause for 2 minutes mid-task to remind students to use the definitions.
• If flow models are too blank, ask one “required label” question before students continue (e.g., “Where does oxygen enter, and which system moves it?”).