A Global Trench War

Overview

In this second lesson of six, students build on Lesson 1’s causes of World War One by locating key places and investigating how the conflict became a global, static war. They use maps, photographs, diagrams and written evidence to connect geography with movement, conditions and consequences, including Pacific perspectives.

Learning intentions

• WALT describe how World War One spread beyond Europe.
• WALT explain the main features of trench warfare on the Western Front.
• WALT use evidence from historical sources to identify patterns and impacts.
• WALT communicate historical understanding through a concept map and labelled diagram.

Success criteria

• I can locate Britain, Germany, France, Aotearoa New Zealand and major regions involved in the war.
• I can explain why trench warfare became static on the Western Front.
• I can describe how conflict affected people and places beyond Europe.
• I can use specific evidence from a source to support an explanation.

Curriculum links

• History — World War One and New Zealand’s role, 1914–1918: the global spread of the conflict and the involvement of Aotearoa New Zealand.
• History — historical significance and causation: explaining why trench warfare became a key feature of the Western Front.
• History — evidence from a range of sources: interpreting maps, photographs, diagrams and written accounts.
• Social Sciences capabilities: thinking critically, communicating explanations, and participating collaboratively in historical inquiry.

Lesson structure (55 minutes)

1. 0–5 min · Do now and retrieval. Display the opening task in the retrieval and map hook slides and distribute the map, source and trench inquiry sheet. Students independently write three causes recalled from Lesson 1, then label Britain, Germany, France and Aotearoa New Zealand on a blank map; they compare answers with a partner while the teacher checks misconceptions.

2. 5–20 min · Knowledge building. Model how to read a historical map by identifying its title, key, scale, direction, dates and symbols, using the map-reading and global theatres slides. Students answer map questions on the worksheet, locating the Western Front, Middle East, Africa and the Pacific, and explaining what the movement of troops, ships or imperial forces suggests. Explicitly teach that the war involved interconnected theatres and communities, including Pacific peoples and territories, rather than being only a European conflict.

Introduce the Western Front as the area of fighting mainly across Belgium and northern France. Model a trench diagram, naming the front line, support trench, reserve trench, communication trench, dugout, barbed wire and no man’s land. Explain that machine guns, artillery, barbed wire and defensive positions made attack dangerous; repeated offensives gained little ground, producing static warfare. Pause for quick checks: “Which feature protected soldiers?” “Why was movement across no man’s land difficult?” and “What does this map show about the war’s global connections?”

3. 20–40 min · Sense making in teams. Place students in six teams of five and give each team a different set of sources from the global war source-card investigation. Sources should include a world map, a Western Front map, a trench photograph or diagram, a New Zealand-related source, and evidence connected to the Middle East, Africa or the Pacific. Students sort evidence into a large concept map with the headings “movement”, “environment”, “people” and “impact”, then draw linking arrows and record a short quotation or visual detail beside each claim.

Require every team to include at least one Pacific connection and discuss whether the source shows the Pacific as strategically important, affected by imperial decisions, or connected to wider movement and supply networks. Circulate with questions: “What exactly do you see?” “What can this source prove?” “What can it not prove?” and “How does this connect to another theatre?” Each team gives a 30-second explanation of one pattern.

4. 40–50 min · Apply learning. Students complete the trench task on the labelled trench diagram and explanation section. They draw and label at least six features, then write 3–4 sentences explaining why the Western Front became static. Their explanation must use two terms—such as defensive position, machine gun, artillery, barbed wire or no man’s land—and one piece of source evidence. Students peer-check against the success criteria, while the teacher conferences with selected learners.

5. 50–55 min · Exit check and link forward. Display the final prompt in the plenary and exit-check slide. Students submit a brief response: “World War One was global because…” and “Trench warfare became static because…”, including one specific place and one piece of evidence. Invite two students to share different answers and preview that the next lesson will examine Aotearoa New Zealand’s involvement and wartime experiences in greater depth.

Resources

• the global war lesson deck
• the map, source and trench inquiry sheet
• Projector or interactive whiteboard
• Six sets of printed source cards and photographs
• A3 paper or large sheets for team concept maps
• Coloured pens or highlighters
• World map and Western Front map
• Timer

Assessment

• Check retrieval responses and map labels during the do now; address confusion about countries, regions and the Western Front immediately.
• Question students during modelling and team work for accurate use of evidence and understanding of static warfare.
• Use the trench explanation and exit response to assess whether students can explain causation, locate regions and support claims with evidence.

Differentiation

• Provide colour-coded maps, a completed example, a word bank and sentence starters: “The source shows…”, “This mattered because…” and “The front became static when…”.
• Chunk source cards into short extracts with one guiding question per source; use photographs and diagrams alongside written evidence.
• Pair students strategically for peer explanation and allocate team roles such as reader, map analyst, evidence finder, recorder and reporter.
• For EAL learners and students requiring additional support, pre-teach key terms orally, use icons and allow labelled diagrams or recorded explanations before writing.
• Advanced learners independently compare two theatres of war, evaluating their different experiences and strategic importance using at least two sources.