History · Year 9 · The Second World War and the Holocaust · Summer Term

Causes of WWII: Invasion of Poland

Students will examine the immediate causes of the Second World War, focusing on Nazi expansionism and the invasion of Poland.

• National Curriculum Attainment Targets
• KS3: History - Challenges for Britain, Europe and the Wider World: 1901-Present
• KS3: History - Causes of the Second World War

About This Topic

This topic covers the early, desperate years of WWII for Britain, focusing on the evacuation of Dunkirk and the Battle of Britain. Students investigate how the 'miracle' of Dunkirk was transformed from a military defeat into a propaganda victory, creating the 'Dunkirk Spirit'. The unit also explores the technological and tactical factors that allowed the RAF to defeat the Luftwaffe in the summer of 1940, preventing a Nazi invasion of Britain.

For Year 9, this is a study of national morale and the impact of air power on modern warfare. It connects the 'Road to War' to the 'Home Front' and the later 'Turning Points' of the conflict. Students grasp this concept faster through structured discussion and peer explanation of the role of Radar and the Spitfire in the Allied victory.

Key Questions

1. Analyze how Hitler's foreign policy aims directly led to the outbreak of WWII.
2. Explain why Britain and France declared war after the invasion of Poland.
3. Evaluate the role of the Nazi-Soviet Pact in enabling the invasion of Poland.

Learning Objectives

• Analyze Hitler's foreign policy aims, such as Lebensraum and the remilitarization of the Rhineland, and explain how they escalated tensions leading to the invasion of Poland.
• Explain the immediate sequence of events following the invasion of Poland, including Britain and France's ultimatum and subsequent declaration of war.
• Evaluate the significance of the Molotov-Ribbentrop Pact, assessing its role in emboldening Hitler to invade Poland and its impact on the geopolitical landscape.
• Identify key territorial disputes and appeasement policies that preceded the invasion of Poland and contributed to the outbreak of war.

Before You Start

Rise of Totalitarianism in Europe

Why: Students need to understand the emergence of fascist and Nazi ideologies and leaders like Hitler to grasp the motivations behind German expansionism.

The Treaty of Versailles and its Consequences

Why: Understanding the terms of the treaty and German resentment is crucial for comprehending Hitler's foreign policy aims and the context of post-WWI Europe.

The Policy of Appeasement

Why: Students must be familiar with Britain and France's earlier attempts to avoid war through concessions to understand why they eventually declared war.

Key Vocabulary

Lebensraum	A German term meaning 'living space'. Hitler used this concept to justify territorial expansion into Eastern Europe, claiming it was necessary for Germany's survival and growth.
Appeasement	A diplomatic policy of making concessions to an aggressive power in order to avoid conflict. Britain and France's policy towards Hitler in the 1930s is a prime example.
Molotov-Ribbentrop Pact	A non-aggression pact signed between Nazi Germany and the Soviet Union in August 1939. It secretly divided Eastern Europe into spheres of influence, clearing the way for Germany's invasion of Poland.
Blitzkrieg	A German military tactic meaning 'lightning war'. It involved fast, concentrated attacks using tanks and air power to overwhelm enemy defenses, first employed effectively in the invasion of Poland.

Watch Out for These Misconceptions

Common Misconception

Dunkirk was a great military victory.

What to Teach Instead

It was a massive military defeat and a narrow escape. Peer-led discussions on 'Defeat into Victory' help students understand how propaganda was used to sustain the war effort.

Common Misconception

The Battle of Britain was won solely by 'The Few' (the pilots).

What to Teach Instead

The victory also depended on the ground crews, the Radar operators, and the factory workers who produced the planes. A 'team effort' activity helps students see the full scale of the operation.

Active Learning Ideas

Inquiry Circle: The Dunkirk Headlines

Groups are given the 'facts' of the evacuation (338,000 saved, but all heavy equipment lost). They must write two headlines: one for a German newspaper (focusing on the defeat) and one for a British newspaper (focusing on the 'miracle').

40 min·Small Groups

Gallery Walk: Why did the RAF win?

Stations feature the Spitfire vs. Messerschmitt, the Dowding System (Radar), and the 'Home Advantage'. Students collect evidence to explain why the Luftwaffe failed to gain air superiority.

35 min·Small Groups

Think-Pair-Share: The 'Darkest Hour'?

Students read excerpts from Churchill's 'We shall fight on the beaches' speech. They discuss in pairs how this speech helped maintain British morale when the country stood alone against Hitler.

20 min·Pairs

Real-World Connections

• Historians specializing in 20th-century European history at institutions like the Imperial War Museums analyze primary source documents, such as diplomatic cables and personal diaries, to reconstruct the decision-making processes leading to the war.
• International relations analysts at think tanks, such as Chatham House, study historical precedents like the invasion of Poland to understand the dynamics of international aggression and collective security in contemporary global conflicts.
• Journalists reporting on geopolitical tensions often draw parallels to the events of 1939, explaining how territorial disputes and broken treaties can escalate into wider conflicts.

Assessment Ideas

Exit Ticket

On a small card, ask students to write: 1) One specific foreign policy aim of Hitler's that directly led to the invasion of Poland. 2) The name of the pact that enabled the invasion. 3) One reason why Britain and France declared war.

Discussion Prompt

Pose the question: 'Was the invasion of Poland inevitable given Hitler's aims and the policies of appeasement?' Facilitate a class discussion, asking students to support their arguments with specific historical evidence discussed in the lesson.

Quick Check

Present students with a short timeline of events from 1938-1939 (e.g., Anschluss, Munich Agreement, invasion of Czechoslovakia, Molotov-Ribbentrop Pact, invasion of Poland). Ask them to number the events in order and write a one-sentence explanation for the significance of the last two events.

Frequently Asked Questions

What was the 'miracle' of Dunkirk?

In 1940, over 338,000 Allied soldiers were trapped by the German army on the beaches of Dunkirk. A makeshift fleet of naval vessels and 'little ships' (civilian boats) managed to evacuate them to Britain, saving the core of the British Army.

Why was the Battle of Britain so important?

It was the first major campaign to be fought entirely by air forces. If the Luftwaffe had defeated the RAF, Germany would have had air superiority, making a sea-borne invasion of Britain (Operation Sea Lion) possible.

What role did Radar play in the Battle of Britain?

Britain's 'Chain Home' radar stations allowed the RAF to see German planes coming before they reached the coast. This meant British pilots didn't have to waste fuel patrolling the skies and could be directed exactly where they were needed.

How can active learning help students understand the Battle of Britain?

By 'mapping' the radar stations and the flight paths of the Luftwaffe, students can see the tactical advantage Britain had. This active 'war gaming' helps them understand that the victory wasn't just about 'bravery', but about technology and organisation.