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From a free set of math lessons to a new app that teaches students about the presidential election process, an update on the latest ed-tech product and service offerings.

Online marketplace lets teachers earn money for curriculum. A new online community called ClassFlow Marketplace lets teachers buy and sell their original educational content, such as lessons plans, assessments, worksheets. Educators can join at no cost, set their own prices (or offer for free) and receive payment immediately upon sale.

Science and social studies library adds assessment tool. Kids Discover Online, an online library of science and social studies curriculum, now includes an assessment feature. Teachers can build quizzes and assignments using the system's pre-written questions or craft their own.

Odysseyware has launched its Agribusiness Systems course, designed to educate students on the business agriculture. The semester-long course includes activities to teach about business, management, marketing, and the financial skills needed to produce agricultural products for domestic and international markets.