You can download the text books for any class by using the following link.. http://tnschools.gov.in/textbooks Science (Physics, Chemistry & Biology) NotesDownload Chapter - 1 Laws of Motion (Physics) Prepared by Jebitha mam Part- 1 Part- 2 Part- 3 Part- 4 Part- 5 Part- 6 Part- 7 Part- 8 Part- 9 Part- 10 Part- 11 Part- 12 Part- 13 Unit- 2 Optics (Physics) Prepared by Jebitha mam Part- 1 Part- 2 Part- 3 Part- 4 Part- 5 Part- 6 Part- 7 Part- 8 Chapter- 7 Atoms & Molecules (Chemistry) - Prepared by Antony sir Part- 1 Part- 2 Part- 3 Part- 4 Part- 5 Chapter- 12 Plant Anatomy & Plant Physiology (Biology)- Prepared by Janakiraman sir Part- 1 Part- 2 Part- 3