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.
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.
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.
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.
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.