https://www.youtube.com/playlist?list=PLVOHiHZt8InI5n_BrW_zz2zYjhXDN5fjG ( need to open once for all chapters of c. Maths) https://youtu.be/M2Vyc-7bzpc (Alzebra part 1) https://youtu.be/1gMA_0z6ZmA ( unit 2,3,4) https://youtu.be/kfgdUjaTRkc ( lession 3 ) https://youtu.be/zwN0mmY0kdE ( Set) https://youtu.be/ZgHeP2MSLEQ Lesson 2) https://youtu.be/yIU0fp4ge7E ( Lesson 5) https://youtu.be/_qiAWCLJMPQ ( Lesson 18) https://youtu.be/ikUEiL6wBzE ( Indices & Its laws) https://youtu.be/xQW9zd_qDTI ( Factorization parts) https://youtu.be/rLlFuFqKKwI ( Household ) https://youtu.be/2lLjy7YzQeg ( Household ) https://youtu.be/Tj36MRRcfa8 ( energy bill) https://youtu.be/xCcCC9cyK9M ( Water bill) https://youtu.be/RWdMOJ6RErc ( Rules for telephone charge) https://youtu.be/w38H8fu170o ( electricity bill questions and method) https://youtu.be/-8NgspSpm...