Khan Academy
Khan Academy: Efficiency in Perfectly Competitive Markets
Why are perfectly competitive markets efficient?
Sophia Learning
Sophia: Perfect Competition
Through notes and related videos, students gain a basic understanding of market structures and the characteristics of firms that display perfect competition.
Khan Academy
Khan Academy: Perfect Competition Foundational Concepts
Practice what you have learned about the foundational ideas behind perfectly competitive markets, including the characteristics of a perfectly competitive market, profit-maximization, and graphs of perfectly competitive firms.
University of North Carolina
University of North Carolina: Perfect Competition
This site shows cost curves for a firm in a perfectly competitive market, and has an interactive graph to show what their profit margin is at various levels of production.
Wikimedia
Wikipedia: Perfect Competition
This site provides a clear description of the requirements and conditions needed in a market for it to be labeled a perfectly competitive market. The topics of allocative efficiency and productive efficiency are also addressed.
Other
South Western Learning: Econ News: Comparative Statics: Perfect Competition
This site offers economics-based newspaper headlines and asks follow-up questions based on supply and demand in a perfectly competitive market.
Other
South Western Learning: Econ News: Perfect Competition
This site offers a variety of economics-related newspaper headlines in perfectly competitive markets, and each headline offers discussion questions related to that topic.
Khan Academy
Khan Academy: Perfect Competition and Why It Matters
Read about the economic ideal of perfect competition.
Tutor2u
Tutor2u: Perfect Competition Introduction
This website describes the conditions of a "perfectly competitive" market structure, and the obstacles that the individual firm in this market will face.
Annenberg Foundation
Annenberg Learner: Economics U$a: 21st Century Edition
A micro and macroeconomics course for 21st century learners. 28 half-hour videos sessions with text and guides regarding markets, firms, supply and demand, perfect competition and inelastic demand, economic efficiency, monopolies,...
Khan Academy
Khan Academy: Profit Maximizing Behavior in Perfectly Competitive Factor Markets
Practice what you have learned about the way firms choose the optimal use of inputs in this four-question exercise.
Other
Elemental Economics: Review of Basic Definitions: Competition
This site provides a good description of the four types of market structures: perfect competition, monopolistic competition, oligopoly, and monopoly, along with the major characteristics of each.
Curated OER
Perfect Competition
This site shows costs curves for a firm in a perfectly competitive market, and has an interactive graph to show what their profit margin is at various levels of production.
Other
A Simple Seller Environment
This site offers a description of a price taker and the characteristics in this sellers' market structure. The price taker is examined in both the short run and the long run.