This physics or chemistry tutoring course is designed for students who want to deepen their knowledge, improve their understanding of key concepts, and succeed in their exams. With a PhD in materials and environmental chemistry, I offer personalized support tailored to each level, from middle school to high school, and even beginning university. You will learn to: - Master the fundamental and advanced concepts of physics or chemistry with clear and structured explanations. - Solve practical exercises and sample problems to reinforce your understanding. - Apply rigorous scientific methods to analyze situations and find solutions. - Effectively prepare for your tests, exams and competitions thanks to regular monitoring and methodological advice. This online course is flexible and designed to fit your learning pace, with a focus on pedagogy and academic success.