Dafaa: High School Lessons

⚠️ Notice: Dafaa is not a government app. It is an independent, private app. It does not represent the Algerian Ministry of National Education or any government entity, and it has no link with them.

دَفْعَة: دروس التعليم الثانوي
دفعة: دروس التعليم الثانوي

Dafaa is a free app for high-school students in Algeria: physics and chemistry lessons, exercises solved step by step up to baccalaureate (BAC) level, and interactive simulations, all in one place.

Who is it for?
• 1st, 2nd and 3rd year of secondary education.
• Streams: experimental sciences, mathematics, technical mathematics, and the common core in science and technology.
• For tests, term exams and the baccalaureate.

Original content, made by us:
Every lesson, explanation, solution and simulation in Dafaa is original content, written by the app's developer (Majal) with a small team of teachers. It follows the Algerian school curriculum taught in public high schools: the same units and the same terms you study in class. The app is in Arabic, like the classes.

What you'll find in the app:
• Clear physics and chemistry lessons, one part at a time, with a summary for every unit.
• Exercises solved step by step, from easiest to hardest, up to BAC level. Try first, then reveal the result and the steps.
• Units such as: following a chemical reaction over time, mechanics and Newton's laws, work and kinetic energy, potential energy, conductance… with new units opening through the year.
• A lab in your pocket: interactive simulations, even offline.
• Lesson questions with their answers.
• Unlimited practice: five answers in a day add a day to your streak.
• From the magazine to the solution: every exercise in our printed revision magazines has a QR code that opens it in the app.
• Practice tests and term exams with their solutions.
• A weekly calendar with reminders for tests and sessions.
• Live sessions and notifications for every new unit.

Subjects:
• Available now: physical sciences (physics and chemistry), 1st to 3rd year secondary.
• Dafaa will cover every high-school subject; mathematics comes next.

Why Dafaa?
• 100% free, no ads.
• No account needed: type your name, pick your year and stream, and start.
• Works offline once a unit is downloaded.

Dafaa is an independent app made by Majal. Its content is original. It is not a government app and does not represent any government entity.

Recent changes:
• New: a "My notes" card on the home screen with all your notes sorted by year and subject, plus general notes.
• Hold a note to make it general or attach it to a lesson or an exercise.
• The calculator button is now an icon, and titles no longer overlap the buttons.
• Teacher mode: some units open to teachers before students, for review. The teacher code is free.
• Faster and smoother.