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"The app, which allows students to take a photo of their homework questions and access a wide variety of helpful guides and explanations, is now offering an excellent feature that helps students with their Math homework. Students can snap a photo of their math problem e.g an equation, and the app will instantly provide them wit detailed explanations, step-by step solutions, graphs, videos and definitions. Socratic is completely free of charge with no in-app purchases"

"How it works: Each student gets a unique barcode - a paper clicker. Students answer questions by showing their barcodes to the teacher's smartphone. The teacher gets a real-time bar graph and the data is stored individually by student."