Educationalresourcescentre01, 

This channel focuses on helping high school students to learn and revise on Chemistry: Electron Configuration in s and p Orbitals notation, Periodic Table, Radioactivity, common mistakes in Chemistry Exam, Structure and Bonding, Organic chemistry(I) and (II), Laboratory preparation of Hydrogen gas, Laboratory preparation of Oxygen gas, Laboratory preparation of Nitrogen(II) Oxide gas,  Calculating R.A.M of Isotopes.
In Mathematics, we focus on: Matrices of Transformations, loci, Solving Quadratic Equations, Solving Simultaneous Linear Equations, Solving linear and Quadratic Equations  simultaneously, Indices, among others