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History, with the timeline drawn

Events in order, sources weighed, and the why behind them.

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Courses

64 courses

Grades 3 to 5

Social studies, grades 3 to 5Grades 3 to 510 units
  1. Maps, globes and geography skills
  2. Earth's regions and how people live
  3. Communities and cultures around the world
  4. Learning about the past: timelines, artifacts and sources
  5. Indigenous peoples and early societies
  6. Exploration, trade and meeting new cultures
  7. Rules, government and being a citizen
  8. Work, money and trade
  9. Migration and changing communities
  10. The history of your country

Grades 6 to 8

World history and geography, grades 6 to 8Grades 6 to 815 units
  1. Thinking like a historian: sources, evidence and time
  2. Early humans and the first farmers
  3. Mesopotamia and ancient Egypt
  4. Ancient India and China
  5. Ancient Greece
  6. Ancient Rome
  7. The spread of world religions
  8. The Islamic world and African kingdoms
  9. Medieval Europe and the Byzantine Empire
  10. China, Japan, Korea and the Mongols
  11. The Maya, Aztec and Inca
  12. Renaissance, Reformation and the Scientific Revolution
  13. Exploration, empires and the Atlantic world
  14. The age of revolutions
  15. The Industrial Revolution and the modern world

High school

World historyGrades 9 to 1212 units
  1. The world before 1200
  2. Empires and exchange, 1200 to 1450
  3. Renaissance and Reformation
  4. Land and sea empires, 1450 to 1750
  5. Enlightenment and the age of revolutions
  6. Industrialization and its effects
  7. Imperialism and colonialism
  8. World War I and the years between the wars
  9. World War II and the Holocaust
  10. The Cold War
  11. Decolonization and independence movements
  12. Globalization and the world today
US historyGrades 10 to 1215 units
  1. Indigenous America and European colonization
  2. The road to revolution and independence
  3. The Constitution and the early republic
  4. Expansion, reform and a growing nation
  5. Slavery, sectional conflict and the Civil War
  6. Reconstruction
  7. Industry, immigration and the Gilded Age
  8. The Progressive Era and overseas expansion
  9. World War I and the 1920s
  10. The Great Depression and the New Deal
  11. World War II
  12. The Cold War and postwar America
  13. The civil rights movement
  14. The 1960s and 1970s
  15. The United States since 1980
Government and civicsGrades 9 to 1210 units
  1. What government is and why it exists
  2. Forms of government around the world
  3. Constitutions and the rule of law
  4. Legislatures, executives and courts
  5. Rights, freedoms and responsibilities
  6. Elections, parties and voting
  7. Media, public opinion and civic life
  8. Local and national government
  9. International organizations and cooperation
  10. Taking civic action
EconomicsGrades 10 to 1210 units
  1. Scarcity, choice and opportunity cost
  2. Supply and demand
  3. Markets, prices and competition
  4. Market failures and the role of government
  5. Money, banks and interest
  6. Measuring the economy: GDP, inflation and unemployment
  7. Fiscal and monetary policy
  8. International trade and exchange rates
  9. Economic growth and development
  10. Personal finance: budgeting, saving and credit

AP courses

AP World History: ModernGrades 10 to 129 units
  1. The global tapestry, 1200 to 1450
  2. Networks of exchange, 1200 to 1450
  3. Land-based empires, 1450 to 1750
  4. Transoceanic interconnections, 1450 to 1750
  5. Revolutions: the Enlightenment, nationalism and the start of industrialization, 1750 to 1900
  6. Consequences of industrialization: imperialism, resistance and migration, 1750 to 1900
  7. Global conflict, 1900 to the present
  8. Cold War and decolonization, 1900 to the present
  9. Globalization, 1900 to the present
AP US HistoryGrades 10 to 129 units
  1. Period 1: 1491 to 1607 (Native societies, contact and Spanish colonization)
  2. Period 2: 1607 to 1754 (English, French and Dutch colonies, trade and slavery)
  3. Period 3: 1754 to 1800 (The Seven Years' War, the Revolution and the Constitution)
  4. Period 4: 1800 to 1848 (The early republic, the market revolution and Jacksonian democracy)
  5. Period 5: 1844 to 1877 (Manifest destiny, slavery, the Civil War and Reconstruction)
  6. Period 6: 1865 to 1898 (Industrialization, immigration, the West and the Gilded Age)
  7. Period 7: 1890 to 1945 (Progressivism, empire, the world wars, the 1920s and the New Deal)
  8. Period 8: 1945 to 1980 (The Cold War, civil rights and the Great Society)
  9. Period 9: 1980 to the present (Conservatism, globalization and the twenty-first century)
AP US Government and PoliticsGrades 11 to 125 units
  1. Foundations of American democracy
  2. Interactions among branches of government
  3. Civil liberties and civil rights
  4. American political ideologies and beliefs
  5. Political participation
AP Human GeographyGrades 9 to 127 units
  1. Thinking geographically
  2. Population and migration
  3. Cultural patterns and processes
  4. Political patterns and processes
  5. Agriculture and rural land use
  6. Cities and urban land use
  7. Industrial and economic development
AP PsychologyGrades 10 to 125 units
  1. Biological bases of behavior
  2. Cognition
  3. Development and learning
  4. Social psychology and personality
  5. Mental and physical health

College

Modern World HistoryCollege9 units
  1. The global tapestry, 1200 to 1450
  2. Networks of exchange, 1200 to 1450
  3. Land-based empires, 1450 to 1750
  4. Transoceanic interconnections, 1450 to 1750
  5. Revolutions: the Enlightenment, nationalism and the start of industrialization, 1750 to 1900
  6. Consequences of industrialization: imperialism, resistance and migration, 1750 to 1900
  7. Global conflict, 1900 to the present
  8. Cold War and decolonization, 1900 to the present
  9. Globalization, 1900 to the present
United States HistoryCollege9 units
  1. Period 1: 1491 to 1607 (Native societies, contact and Spanish colonization)
  2. Period 2: 1607 to 1754 (English, French and Dutch colonies, trade and slavery)
  3. Period 3: 1754 to 1800 (The Seven Years' War, the Revolution and the Constitution)
  4. Period 4: 1800 to 1848 (The early republic, the market revolution and Jacksonian democracy)
  5. Period 5: 1844 to 1877 (Manifest destiny, slavery, the Civil War and Reconstruction)
  6. Period 6: 1865 to 1898 (Industrialization, immigration, the West and the Gilded Age)
  7. Period 7: 1890 to 1945 (Progressivism, empire, the world wars, the 1920s and the New Deal)
  8. Period 8: 1945 to 1980 (The Cold War, civil rights and the Great Society)
  9. Period 9: 1980 to the present (Conservatism, globalization and the twenty-first century)
Introduction to American GovernmentCollege5 units
  1. Foundations of American democracy
  2. Interactions among branches of government
  3. Civil liberties and civil rights
  4. American political ideologies and beliefs
  5. Political participation
Introduction to Human GeographyCollege7 units
  1. Thinking geographically
  2. Population and migration
  3. Cultural patterns and processes
  4. Political patterns and processes
  5. Agriculture and rural land use
  6. Cities and urban land use
  7. Industrial and economic development
Introduction to PsychologyCollege5 units
  1. Biological bases of behavior
  2. Cognition
  3. Development and learning
  4. Social psychology and personality
  5. Mental and physical health
Introduction to BusinessCollege9 units
  1. The business environment
  2. Ethics and social responsibility
  3. Business in a global economy
  4. Forms of business ownership
  5. Entrepreneurship and small business
  6. Management and operations
  7. Human resources and motivation
  8. Marketing fundamentals
  9. Accounting and finance basics
Principles of ManagementCollege10 units
  1. Managers and management
  2. The evolution of management thought
  3. Environment, culture and global management
  4. Planning and strategic management
  5. Managerial decision making
  6. Organizational structure and design
  7. Motivation
  8. Leadership
  9. Teams, communication and conflict
  10. Control and organizational change
Principles of MarketingCollege11 units
  1. Marketing and customer value
  2. Strategic planning and the marketing environment
  3. Marketing research and analytics
  4. Consumer and business buyer behavior
  5. Segmentation, targeting and positioning
  6. Products, services and brands
  7. Pricing
  8. Marketing channels and supply chains
  9. Integrated marketing communications
  10. Digital, global and sustainable marketing
  11. Customer analytics
Financial AccountingCollege10 units
  1. The accounting equation and statements
  2. The recording process
  3. Accrual accounting and the accounting cycle
  4. Merchandising and inventory
  5. Cash and receivables
  6. Property, plant and equipment and intangibles
  7. Liabilities
  8. Stockholders' equity
  9. The statement of cash flows
  10. Financial statement analysis
Managerial AccountingCollege11 units
  1. Managerial accounting and cost concepts
  2. Cost behavior
  3. Cost-volume-profit analysis
  4. Job-order costing
  5. Process costing
  6. Activity-based and variable costing
  7. Budgeting
  8. Standard costs and variances
  9. Relevant costs for decisions
  10. Capital budgeting decisions
  11. Decentralization and performance measurement
Corporate FinanceCollege11 units
  1. Foundations of corporate finance
  2. Annuities, perpetuities and interest rates
  3. Capital budgeting
  4. Interest rates and bond valuation
  5. Stock valuation
  6. Risk and return
  7. Beta, CAPM and market efficiency
  8. Cost of capital
  9. Capital structure
  10. Dividends and payout policy
  11. Short-term finance and working capital
InvestmentsCollege10 units
  1. The investment environment
  2. Risk and return
  3. Portfolio theory
  4. Asset pricing models
  5. Market efficiency and behavioral finance
  6. Bond prices and yields
  7. Equity valuation
  8. Options
  9. Futures, forwards and swaps
  10. Portfolio performance evaluation
Personal FinanceCollege10 units
  1. Financial planning foundations
  2. Budgeting and saving
  3. Banking and payment services
  4. Taxes
  5. Credit and debt
  6. Housing and major purchases
  7. Insurance and risk management
  8. Investing basics
  9. Retirement planning
  10. Estate planning and financial protection
Financial Markets and InstitutionsCollege10 units
  1. An overview of the financial system
  2. Money and interest rates
  3. The risk and term structure of interest rates
  4. Central banks and monetary policy
  5. Banking and the management of financial institutions
  6. Financial regulation
  7. Money and bond markets
  8. Stock and foreign exchange markets
  9. Derivatives markets
  10. Financial crises
Principles of MicroeconomicsCollege12 units
  1. Scarcity, choice and the gains from trade
  2. Supply and demand
  3. Elasticity
  4. Market efficiency and government policy
  5. Consumer choice
  6. Production and costs
  7. Perfect competition
  8. Monopoly
  9. Oligopoly and monopolistic competition
  10. Markets for factors of production
  11. Externalities and public goods
  12. Inequality and poverty
Principles of MacroeconomicsCollege10 units
  1. Measuring national income
  2. Measuring the cost of living
  3. Unemployment
  4. Production and long-run growth
  5. Saving, investment and the financial system
  6. Money and banking
  7. Aggregate demand and aggregate supply
  8. Monetary and fiscal policy
  9. Inflation and unemployment tradeoff
  10. The open economy
Intermediate MicroeconomicsCollege11 units
  1. Preferences and utility
  2. Budget constraints and optimal choice
  3. Demand and the Slutsky equation
  4. Labor supply and intertemporal choice
  5. Choice under uncertainty
  6. Technology, production and cost
  7. Competitive markets
  8. General equilibrium and welfare
  9. Monopoly and pricing
  10. Game theory and oligopoly
  11. Asymmetric information and externalities
Intermediate MacroeconomicsCollege11 units
  1. National accounts and macro data
  2. The Solow growth model
  3. Endogenous growth
  4. Labor markets and unemployment
  5. Short-run fluctuations: IS-LM
  6. The open economy in the short run
  7. Aggregate supply and expectations
  8. Consumption theory
  9. Investment and intertemporal models
  10. Monetary policy
  11. Fiscal policy and government debt
Introduction to EconometricsCollege10 units
  1. The simple regression model
  2. Multiple regression
  3. Inference with OLS
  4. Functional form and dummy variables
  5. Heteroskedasticity and specification
  6. Instrumental variables
  7. Panel data methods
  8. Policy evaluation designs
  9. Time series regression
  10. Limited dependent variable models
Game TheoryCollege8 units
  1. Games and payoffs
  2. Nash equilibrium
  3. Mixed strategies
  4. Dynamic games and subgame perfection
  5. Repeated games
  6. Incomplete information and Bayesian games
  7. Signaling and screening
  8. Bargaining and applications
International EconomicsCollege8 units
  1. Classical and factor-based trade theory
  2. Increasing returns and the gravity model
  3. Tariffs, quotas and subsidies
  4. Trade agreements and blocs
  5. Open-economy accounting
  6. Exchange rate determination
  7. Macroeconomic policy under exchange rate regimes
  8. Currency crises, capital flows and sovereign debt
Public EconomicsCollege8 units
  1. Efficiency and the role of government
  2. Externalities
  3. Public goods
  4. Tax incidence and efficiency
  5. The income tax and behavior
  6. Education and health policy
  7. Redistribution and the safety net
  8. Social insurance and the budget
Labor EconomicsCollege8 units
  1. Labor supply
  2. Labor demand
  3. Human capital
  4. Wage structure and inequality
  5. Discrimination
  6. Personnel economics and compensation
  7. Unions and immigration
  8. Unemployment and labor mobility
Development EconomicsCollege8 units
  1. Measuring development and poverty
  2. Neoclassical growth
  3. Endogenous growth and technology
  4. Structural change and the dual economy
  5. Health, education and population
  6. Credit, risk and institutions
  7. Policy, aid and evidence
  8. Trade, resources and the environment
Business AnalyticsCollege8 units
  1. Descriptive analytics and visualization
  2. Probability and decision trees
  3. Sampling and A/B tests
  4. Regression and forecasting
  5. Linear programming
  6. Simulation and Monte Carlo
  7. Revenue management and inventory
  8. Intro to predictive classification
Operations and Supply Chain ManagementCollege8 units
  1. Process analysis
  2. Queues and variability
  3. Quality and Six Sigma
  4. Inventory management
  5. Lean and just in time
  6. Supply chain management
  7. Project management
  8. Forecasting and planning
Entrepreneurship and New VenturesCollege8 units
  1. Opportunity and the entrepreneurial mindset
  2. Customer discovery and validation
  3. Business models and go to market
  4. Market sizing and unit economics
  5. Financial projections
  6. Intellectual property and legal structure
  7. Financing and valuation
  8. Growth, exits and pitching
Business Law and EthicsCollege8 units
  1. The legal system and courts
  2. Torts and product liability
  3. Contract formation
  4. Defenses, breach and remedies
  5. Sales, agency and employment
  6. Business organizations and credit
  7. Bankruptcy, securities and IP
  8. Ethics and corporate responsibility
Real Estate PrinciplesCollege8 units
  1. Property types and markets
  2. Property rights and ownership
  3. Leases and rents
  4. Valuation and appraisal
  5. Mortgage basics
  6. Investment metrics
  7. The development process
  8. Market cycles and risk
Real Estate Finance and InvestmentCollege8 units
  1. Time value of money
  2. Mortgage loans, ARMs and APR
  3. Underwriting and credit
  4. NOI and the pro forma
  5. DCF, NPV and IRR
  6. Leverage, taxes and depreciation
  7. REITs and mortgage securities
  8. Joint ventures and equity waterfalls
Real Estate DevelopmentCollege8 units
  1. The development process
  2. Market analysis
  3. Site selection and analysis
  4. Entitlement and approvals
  5. The development budget and land value
  6. Construction financing and draws
  7. The development pro forma
  8. Leasing, exit and risk
Urban Economics and Land UseCollege8 units
  1. Why cities exist
  2. Bid-rent and the monocentric city
  3. Suburbanization and polycentric cities
  4. Housing markets and supply
  5. Zoning and land use regulation
  6. Transportation and congestion
  7. Local public finance and sorting
  8. Planning and growth management
Real Estate LawCollege8 units
  1. Property rights and estates
  2. Concurrent ownership and common interests
  3. Contracts and agency
  4. Deeds, title and recording
  5. Mortgages and foreclosure
  6. Landlord and tenant law
  7. Land use, zoning and takings
  8. Environmental, fair housing and closing
Comparative PoliticsCollege12 units
  1. The comparative method
  2. The state and state formation
  3. Nations and nationalism
  4. Political economy and development
  5. Democracy and its measurement
  6. Democratization and backsliding
  7. Authoritarian regimes
  8. Presidential and parliamentary systems
  9. Electoral systems
  10. Parties and party systems
  11. Federalism and constitutional design
  12. Contention and political violence
International RelationsCollege12 units
  1. Studying international relations
  2. Realism
  3. Liberalism and institutions
  4. Constructivism and critical approaches
  5. The international system to 1945
  6. The Cold War and after
  7. War and bargaining
  8. Deterrence and nuclear weapons
  9. Terrorism and counterterrorism
  10. International organizations, law and human rights
  11. Trade and finance
  12. Development, globalization and the global commons
Political TheoryCollege13 units
  1. Plato and Aristotle
  2. Machiavelli
  3. Hobbes
  4. Locke
  5. Rousseau
  6. Utilitarianism and Mill on liberty
  7. Marx and Marxism
  8. Rawls and justice
  9. Nozick and communitarianism
  10. Democratic theory
  11. Feminist political theory
  12. Power and legitimacy
  13. Ethics and society
Research Methods in Political ScienceCollege11 units
  1. The scientific study of politics
  2. Concepts and measurement
  3. Research design
  4. Experiments
  5. Surveys and sampling
  6. Case studies and process tracing
  7. Descriptive statistics
  8. Statistical inference
  9. Correlation and regression
  10. Causal inference
  11. Research ethics and transparency
The US CongressCollege8 units
  1. Elections and incumbency
  2. Representation
  3. Committees
  4. Parties and leadership
  5. Floor procedure and the filibuster
  6. How a bill becomes law
  7. Congress, the president and the bureaucracy
  8. Lobbying and interest groups
The American PresidencyCollege8 units
  1. Constitutional design of the presidency
  2. Nomination and elections
  3. Theories of presidential power
  4. The president and Congress
  5. The bureaucracy and the executive office
  6. Foreign policy and war powers
  7. The president and the public
  8. Historical development of the presidency
Constitutional Law and the Supreme CourtCollege8 units
  1. Judicial review
  2. Federalism and the commerce power
  3. Separation of powers
  4. Equal protection and race
  5. Free speech
  6. Religion and the Constitution
  7. Privacy, due process and the rights of the accused
  8. Judicial politics
Public Opinion, Voting and ElectionsCollege8 units
  1. How opinions form
  2. Polling and sampling
  3. Partisanship and polarization
  4. Turnout
  5. Vote choice and the spatial model
  6. Campaigns and money
  7. Redistricting and election law
  8. Party realignments
Political EconomyCollege8 units
  1. Collective action and public goods
  2. States and markets
  3. Varieties of capitalism and welfare states
  4. Institutions and development
  5. Corruption, oil and aid
  6. The politics of trade
  7. Money and finance
  8. Globalization and backlash
Politics of ChinaCollege8 units
  1. Late Qing and revolution
  2. Nationalists, communists and war
  3. Building the People's Republic
  4. The Cultural Revolution and Mao's end
  5. Reform since 1978
  6. Party-state institutions
  7. Economy, society and protest
  8. Nationalism, foreign policy and the periphery
Latin American PoliticsCollege8 units
  1. Colonial legacies and independence
  2. Import substitution and populism
  3. Coups and bureaucratic authoritarianism
  4. Revolution
  5. Transitions to democracy
  6. Mexico: the PRI and its fall
  7. The left turn and inequality
  8. Crime, drugs and the United States
European Politics and the European UnionCollege8 units
  1. Political development of Western Europe
  2. Britain and the Westminster model
  3. France and semi-presidentialism
  4. Germany: federalism and the mixed system
  5. Nordic welfare states
  6. European integration history
  7. EU institutions
  8. The euro crisis, Brexit and populism
East Asian HistoryCollege9 units
  1. Early China and the classical tradition
  2. Tang, Song and the spread of Buddhism and Chinese institutions
  3. Mongols and Ming
  4. Tokugawa Japan and Joseon Korea
  5. Qing China and the Western challenge
  6. Meiji Japan
  7. Revolution in China, 1911 to 1949
  8. Japanese empire and war in the Pacific
  9. Postwar East Asia
Race and Ethnicity in the United StatesCollege8 units
  1. Slavery and the making of race
  2. Emancipation, Reconstruction and Jim Crow
  3. The Great Migration and the civil rights movement
  4. Asian American history
  5. European immigrants and whiteness
  6. Mexican American history
  7. Native nations and the United States
  8. Immigration law over time
Global Environmental HistoryCollege8 units
  1. Humans in nature: foundations
  2. The Neolithic revolution
  3. The Columbian Exchange and the first global era, 1400 to 1750
  4. Plantations, silver and commodity frontiers
  5. Industrial revolutions and fossil fuels
  6. Empire, resources and landscapes
  7. The Great Acceleration since 1945
  8. Environmental movements and climate politics
Science, Technology and Medicine in HistoryCollege8 units
  1. Ancient and medieval science
  2. The Scientific Revolution
  3. The industrial revolution's technologies
  4. Darwin and the life sciences
  5. Epidemics and sanitation
  6. Germ theory, vaccines and global health
  7. Twentieth-century big science
  8. The computer and the internet
Modern European HistoryCollege9 units
  1. Enlightenment and the old regime
  2. French Revolution and Napoleon
  3. Industrialization
  4. 1848 and nationalism
  5. Imperialism
  6. World War I and the Russian Revolution
  7. Interwar crisis and fascism
  8. World War II and the Holocaust
  9. Europe since 1945
Latin American HistoryCollege9 units
  1. Pre-Columbian societies
  2. Conquest, colonial society and economy
  3. Independence movements, 1808 to 1825
  4. State formation and caudillos
  5. Export economies
  6. The Mexican Revolution
  7. Populism and the twentieth century
  8. Cold War revolutions and dictatorships
  9. Brazil
History of the Middle EastCollege9 units
  1. The rise of Islam and the caliphates
  2. Medieval dynasties, Crusades and Mongols
  3. The Ottoman, Safavid and Mughal empires
  4. Nineteenth-century reforms and European imperialism
  5. World War I and the mandates
  6. Nationalism and independence
  7. The Arab-Israeli conflict
  8. Oil and the Iranian revolution
  9. The region since 1990
US Foreign RelationsCollege9 units
  1. Founding diplomacy
  2. Continental expansion, Monroe and Manifest Destiny
  3. 1898 and the overseas empire
  4. World War I and Wilson
  5. The interwar years and World War II
  6. Cold War containment
  7. Vietnam
  8. The end of the Cold War
  9. After 9/11

How Helio teaches it

  • Timelines and maps

    Helio draws events in order as it explains them.

  • Sources and evidence

    Ask who wrote a source, when, and why.

  • Civics and economics

    Government, money and markets, up to AP.

Helio checks math. In other subjects it can be wrong, so ask why.

Free to start

Paid plans add more time, from $50 a month.