Freemium – ‘Freemium’ A combination of the words “free” and “premium” used to describe a business model that offers both free and premium services. The freemium business model works by offering simple and basic services for free for the user to try and more advanced or additional features at a premium.

Crowdsourced – the practice of obtaining needed services, ideas, or content by soliciting contributions from a large group of people and especially from the online community rather than from traditional employees or suppliers.

Adaptive – Adaptive learning is a technique for providing personalized learning, which aims to provide efficient, effective, and customized learning paths to engage each student. Adaptive learning systems use a data-driven approach to adjust the path and pace of learning, enabling the delivery of personalized learning at scale. Here are 7 things you should know about adaptive learning. 

You can read more about Jill Watson here. 
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 A free web program to help students learn and practice math. Their goal is to develop effective, efficient, adaptive, and intrinsically rewarding supplemental math activities.

Read Theory is a  free adaptive learning program to help students practice their reading skills. Students are assigned readings in the Zone of Proximal Development and receive feedback their responses to questions.

Quill provides free writing and grammar activities for middle and high school students. Their mission is to provide free online tools to help low-income students become sharp writers. Our mission is to help the 30 million low-income K-12 students in the United States who struggle with writing.

Front Row helps you deliver the perfect lesson to every student across the curriculum. Students automatically work on the Math, ELA, Social Studies and Science lessons that are perfect for them. That way, they are always engaged and challenged, never facing material that is too difficult or easy for them.

Quizzizz is a free, fun, crowdsourced multiplayer classroom activity, that allows all your students to practice together. The cloud-based service allows users to create and share the quizzes with peers, So you can crowdsource question creation to students. Let them take part in designing and delivering content.