Stoichiometry: The Mathematics of Chemistry · Weeks 28-36

Molecular Formulas from Empirical Formulas

Calculating the actual molecular formula of a compound given its empirical formula and molar mass.

About This Topic

In the 1930s, Japan's civilian government lost control to a militaristic faction that sought to solve Japan's economic problems through imperial expansion. This topic covers the invasion of Manchuria, the 'Rape of Nanking,' and the vision of a 'Greater East Asia Co-Prosperity Sphere.' Students analyze how Japan justified its aggression as an 'anti-colonial' movement to liberate Asia from Western influence.

For 10th graders, Japanese militarism is a key piece of the puzzle leading to WWII. It illustrates the global nature of the conflict and the failure of the League of Nations to stop aggression. This topic particularly benefits from hands-on, student-centered approaches like a mock League of Nations session where students debate the response to the invasion of Manchuria.

Active Learning Ideas

Mock League of Nations: The Manchurian Crisis

Students represent different nations in 1931. Japan argues its 'need' for resources, while China appeals for help. The rest of the class must decide whether to impose sanctions or issue a 'strongly worded letter,' experiencing the League's weakness.

⏱ 60 min·Whole Class

Generate mission

Inquiry Circle: The Co-Prosperity Sphere

Small groups analyze Japanese propaganda posters aimed at other Asian nations. They identify the 'anti-Western' themes and then compare them with accounts of how Japan actually treated the people in its occupied territories.

⏱ 45 min·Small Groups

Generate mission

Think-Pair-Share: The Military vs. The Civilians

Pairs discuss the 'Assassination of Prime Minister Inukai' and other events that led to the military takeover. They evaluate how a military can gain control over a democratic government during an economic crisis.

⏱ 30 min·Pairs

Generate mission

Watch Out for These Misconceptions

Common Misconception

Japan was always a militaristic society.

What to Teach Instead

Japan had a period of liberal democracy in the 1920s (Taisho Democracy) before the Great Depression and nationalist fervor allowed the military to take over. A timeline of the 1920s vs. 1930s helps students see this shift.

Common Misconception

The 'Co-Prosperity Sphere' was a sincere attempt at Asian unity.

What to Teach Instead

While marketed as 'Asia for Asians,' it was actually a system for Japan to extract resources and labor from its neighbors. Peer comparison of propaganda versus reality helps students see the imperialist nature of the project.

Frequently Asked Questions

Why did Japan invade Manchuria in 1931?

Japan was a small island nation with few natural resources. The Great Depression hit its economy hard, and the military believed that seizing resource-rich Manchuria was the only way to ensure Japan's survival and status as a world power.

What was the 'Greater East Asia Co-Prosperity Sphere'?

This was Japan's concept for a bloc of Asian nations led by Japan and free of Western influence. In reality, it was an empire where Japan occupied neighboring countries and used their resources for its own war effort.

How did the League of Nations respond to Japanese aggression?

The League issued the Lytton Report, which condemned Japan's actions but offered no military or economic sanctions. In response, Japan simply withdrew from the League, demonstrating the organization's inability to maintain collective security.

How can active learning help students understand Japanese militarism?

A mock League of Nations session is highly effective for showing the diplomatic failures of the 1930s. When students 'play' the role of a nation that is too afraid or too broke to stop Japan, they understand why the 'path to war' was so difficult to block, making the history feel like a series of choices rather than an inevitability.

Browse curriculum by country

• Americas
• US
• CA
• MX
• CL
• CO
• BR

• Europe
• UK
• IE
• FR
• DE
• ES
• IT
• NL
• PT
• SE

• Asia & Pacific
• IN
• SG
• AU