Academy Sigma is a small team of qualified subject-specialist tutors, working independently in their specialized subjects to provide the highest standards of academic instruction, skills training and learning support to students of Mathematics, Economics, Physics and Computer Science. We are attentive and responsive to our students' academic progress and learning requirements. Instruction is provided through direct lessons, conducted either at student's location/residence, or at a designated classroom, located in Sheung Wan in Hong Kong island. Students can email us with any subject-related queries anytime. If you're unable to solve some assigned problemIn the age of the mobile web,We strive to respond within the same day. Additionally, students can also access and download compact topic notes, insightful problems & solutions and past examination papers from 2005 - 2014 for IB, GCSE and A Levels specifications. Since 2005, we've guided hundreds of students to notable achievements and significant grade improvements at secondary, high school and early university levels.