Hess's Law of Heat Summation
Calculating the total enthalpy change by summing steps of a reaction.
Key Questions
- Explain how Hess's Law illustrates the Law of Conservation of Energy.
- Calculate the enthalpy change for a reaction using Hess's Law.
- Analyze how to find the energy of a reaction that is too dangerous to perform directly.
Common Core State Standards
About This Topic
Apartheid was a system of institutionalized racial segregation and discrimination in South Africa that lasted from 1948 until the early 1990s. This topic covers the laws that enforced white minority rule, the brutal suppression of the Black majority, and the long struggle for freedom led by the African National Congress (ANC) and figures like Nelson Mandela and Desmond Tutu. Students also examine the role of international pressure, including sanctions and the divestment movement.
For 10th graders, this unit is a study in systemic racism and the power of global activism. It connects to the US Civil Rights Movement and illustrates the possibility of reconciliation after decades of conflict. This topic particularly benefits from hands-on, student-centered approaches like a 'mock trial' of the Apartheid system or a collaborative investigation of the Truth and Reconciliation Commission.
Active Learning Ideas
Stations Rotation: The Laws of Apartheid
Stations feature the text of specific laws (e.g., the Group Areas Act, the Pass Laws). Students must explain how each law restricted the daily life, movement, and economic opportunity of Black South Africans.
Simulation Game: The Divestment Debate
Students take on the roles of university students, corporate CEOs, and politicians in the 1980s. They debate whether to pull their money out of South Africa (divestment) to pressure the government, weighing the economic cost against the moral imperative.
Inquiry Circle: Truth and Reconciliation
Small groups analyze transcripts from the Truth and Reconciliation Commission (TRC). They discuss the trade-off between 'justice' (punishing the guilty) and 'reconciliation' (healing the nation through truth-telling).
Watch Out for These Misconceptions
Common MisconceptionApartheid was just 'unfortunate' racism like in many other countries.
What to Teach Instead
It was a unique, legally codified system where every aspect of life was determined by a person's racial classification. Peer analysis of the 'Population Registration Act' helps students see the extreme nature of the system.
Common MisconceptionNelson Mandela was always a peaceful 'grandfather' figure.
What to Teach Instead
He was a radical activist who initially supported armed struggle after peaceful protests were met with violence. Peer discussion of his transition from 'revolutionary' to 'peacemaker' helps students see his complex evolution.
Suggested Methodologies
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Frequently Asked Questions
What were the 'Pass Laws'?
What was the Soweto Uprising?
How did international sanctions help end Apartheid?
How can active learning help students understand Apartheid?
Planning templates for Chemistry
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