Gooru is a free search engine for learning developed by a 501(c)(3) non-profit organization whose mission is to honor the human right to education. http://www.goorulearning.org
Gooru is a search engine for learning that allows you to explore and study over 2,600 standards-aligned and personalized study guides. Study guides cover 5th-12th grade math and science topics, and resources include digital textbooks, animations, instructor videos and more. All resources are vetted and organized by teachers or Gooru's content experts, so you don't have to sort through the mess of subpar educational resources available online yourself.
Gooru also makes it easy for you to connect with your worldwide peers to make learning a social experience. Post questions to an active community of students, teachers and experts, or find friends and peers to study with.
Best of all, Gooru adapts to you. Based on the topics you study and your performance on self-assessments, Gooru suggests resources and study guides that will help you master the concepts. You can track your study habits and monitor your performance on any of the topics you study.