Basic Maths Skills Videos
GCSE Grade A/A* (NC Level 9/10) Topics
Topic 1  Powers and Indices laws
This video goes through the laws of indices then does several examples of each one with a couple of tricky ones at the end.Interactive Practice from CIMT : Basic Laws Negative Indices Fractional Indices Worked exam questions: RawMaths 

Topic 2  Manipulate and simplify surds
This video goes through the methods used to simplify and combine surds.Worked exam questions: RawMaths General Tutorials: maths247 HEGARTYMATHS  Simplfying Multiplying Rationalising 

Topic 3  Upper and Lower Bounds (Limits)
This video goes through Maximum and Minimum values that a number could have been before rounding. Then goes on to look at the combining of limits (combining is the tricky stuff).Interactive Practice from CIMT : Error Propagation Playlist on this topic: maths247 

Topic 4  Direct and Inverse Proportion
This video goes through 3 standard proportionality questions, although direct proportion is a Lv 8 (GCSE Grade B) topic Inverse questions are Lv 9(GCSE Grade A) .Worked exam questions: RawMaths General Tutorial: maths247 HEGARTYMATHS 

Topic 5  Solving Quadratics by Factorising
This video goes through one example of solving a none standard Quadratic equation, you should already be familiar with factorising from Lv8(GCSE Grade B).
Interactive Practice from CIMT : Quadratics  Do questions 3&4 Worked exam questions: RawMathsquadratics start at 4:00 

Topic 6  Solve quadratic equations by using the formula
This video from ExamSolutions gives a nice clear example of how to use the formula to solve a quadratic equation.
Worked exam questions: RawMaths 1 2 3 maths247 General Tutorial: Hegartymaths  Lots of Pratice maths247 

Topic 7  Solving quadratics by completing the square
This video from ExamSolutions goes through a few examples of completing the square whilst explaining what is going on.
Interactive Practice from CIMT : Completing the square questions Worked exam questions: Rawmaths1 2 Maths247 General Tutorial: maths247 

Topic 8  Manipulate Algebraic expressions  Simplifying rational expressions
This video by Exam Solutions goes through 4 examples of simplifying algebraic fractions, this is all about factorising the top and the bottom and then canceling them.
Worked exam questions: RawMaths1 2 

Topic 9  Algebraic Fractions
This video goes through examples of how to solve equations with alebraic fractions. Check out the Second video for tricker quadratic ones
General Tutorial: Algebraic Fractions Part 2 (Hard ones) Worked exam questions: RawMaths  easier RawMaths  harder RawMaths MyMaths revision : Algebraic Fractions  Lesson Algebraic Fractions  worksheet 

Topic 10  Simultaneous Equations including one quadratic
This video goes through lots of simultaneous equations worked exam questions but the ones for this topic start at 9:11.
