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Weather and Climate · Weeks 28-36

The Coriolis Effect and Global Winds

Students investigate how Earth's rotation affects the movement of air and ocean currents.

Key Questions

  1. Explain how the rotation of the Earth affects the movement of air.
  2. Analyze the formation of global wind patterns like trade winds and westerlies.
  3. Predict the path of a hurricane if the Coriolis effect were absent.

Common Core State Standards

MS-ESS2-6
Grade: 6th Grade
Subject: Science
Unit: Weather and Climate
Period: Weeks 28-36

About This Topic

The Qin Dynasty, though short-lived, was the first to truly unify China under a single emperor, Shi Huangdi. This topic explores his use of Legalist principles to end the Warring States period and his massive projects to standardize China, including a single currency, a uniform writing system, and standardized weights and measures. Students also investigate the construction of the Great Wall and the incredible Terracotta Army.

This unit aligns with history and civics standards by examining the tension between a leader's achievements and their methods. Students analyze whether Shi Huangdi's contributions to China's unity outweigh his reputation as a cruel tyrant who burned books and buried scholars alive. Students grasp this concept faster through structured discussion and peer explanation as they 'put the Emperor on trial' for his actions.

Active Learning Ideas

Watch Out for These Misconceptions

Common MisconceptionThe Great Wall we see today was built entirely by the Qin.

What to Teach Instead

Shi Huangdi connected existing walls, but most of the stone wall we see today was built much later by the Ming Dynasty. A 'history of the wall' timeline can help clarify its long construction process.

Common MisconceptionShi Huangdi was a beloved leader because he ended the wars.

What to Teach Instead

While people were glad the wars ended, his high taxes and forced labor made him very unpopular, and his dynasty was overthrown almost immediately after his death. Discussing the 'cost of unity' helps students see the complexity of his reign.

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Frequently Asked Questions

Why did Shi Huangdi burn books?
As a Legalist, Shi Huangdi wanted to control what people thought. He ordered the burning of books on Confucianism and history because he believed they encouraged people to criticize his government and look back to the 'old ways' instead of obeying his new laws.
How did the Great Wall protect China?
The wall was built to keep out nomadic invaders from the north, like the Xiongnu. It also served as a high-speed 'highway' for soldiers and a communication system using smoke signals to warn of approaching enemies.
What was the 'standardization' of China?
Shi Huangdi made everything the same across his empire: he created one type of money, one set of weights and measures for trade, and one simplified way of writing. This made it much easier for people from different regions to trade and for the government to collect taxes.
How can active learning help students understand the Qin Dynasty?
Active learning, like a mock trial, forces students to weigh the 'pros and cons' of a strong, centralized government. By arguing both sides of Shi Huangdi's legacy, they learn that history isn't just about 'good' or 'bad' people, but about the difficult choices leaders make and the impact those choices have on their subjects.

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