Systems & Society

• If it Were My Home - Compare Countries - Which Place is Better to Live in?
• Goodgame Empire - Build an Empire & practice Economics & Good Governance
• iCivics "Crisis of Nations" - Government Simulation - Cooperate & Negotiate with Other Nations
• Cyber Nations - Government Simulation - Build Your Own Country - Make Your Own Laws, etc. 
• Choose it! Economic Vocabulary Review Quiz
• ​Quia Economics Review (Jeopardy Game Show Style; 1-2 players)

Geography

•  Links to Geo Games, Trivia & Quizzes:
  • Google SmartyPins
  • Google GeoGuesser
  • 80 Clicks - Google Maps Geography Location Challenge
    
  • World Continents Online Puzzle & Trivia
  • Earth Picker
  • TrueSize.com
  • Geography Trivia
  • World Geography Games
  • Map Race
  • Matching Landforms - Memory Game

Social Studies Trivia Knowledge & Vocabulary

• Free Rice - Pick a Subject (Humanities, Geography)

Research skills

• A Google a Day...