VentureLad is a nonprofit organization that helps students gain entrepreneurial skills, students achievement, and postsecondary readiness. Offers a free curriculum that teaches about entrepreneurship.
Junior Achievement provides numerous videos and activities that are great for elementary schoolers. There are many downloadable worksheets that teach about economics and entrepreneurship.
Lemonade Day is an online competition where students submit a business goals and lemonade stand worksheet describing their goals and designs. The winner receives a $100 cash prize.