What are some good websites to read about the theory behind A-Level (high school) maths?












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I am doing my maths A-level*. Often when I am at home I get questions about why we solve certain problem types in a certain way. One example is "why does completing the square work?"



Is there a website which collects explanations like these together for me to read? Preferably one that is aimed at A-level students.



*Roughly equivalent to American AP classes, to give an idea of the level needed.










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    $begingroup$


    I am doing my maths A-level*. Often when I am at home I get questions about why we solve certain problem types in a certain way. One example is "why does completing the square work?"



    Is there a website which collects explanations like these together for me to read? Preferably one that is aimed at A-level students.



    *Roughly equivalent to American AP classes, to give an idea of the level needed.










    share|cite|improve this question









    $endgroup$















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      0








      0





      $begingroup$


      I am doing my maths A-level*. Often when I am at home I get questions about why we solve certain problem types in a certain way. One example is "why does completing the square work?"



      Is there a website which collects explanations like these together for me to read? Preferably one that is aimed at A-level students.



      *Roughly equivalent to American AP classes, to give an idea of the level needed.










      share|cite|improve this question









      $endgroup$




      I am doing my maths A-level*. Often when I am at home I get questions about why we solve certain problem types in a certain way. One example is "why does completing the square work?"



      Is there a website which collects explanations like these together for me to read? Preferably one that is aimed at A-level students.



      *Roughly equivalent to American AP classes, to give an idea of the level needed.







      proof-explanation self-learning online-resources






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      asked Nov 8 '18 at 20:54









      kumikankumikan

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          I would suggest Khan Academy,



          https://www.khanacademy.org/math



          they have this dividsion on grades or topics, i believe they enter in this kinds of small proofs, i understand you are being asked questions about generalizations, and it i think it depends on how hard a topic is to generalize without using further concepts






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            $begingroup$

            Alright, here are the sites that I have been using.
            As always, Khan Academy is good. Some of the content needed is in Algebra 2, and some of it (differentiation/integration) is in the AP Calculus classes.



            ExamSolutions.net: https://www.examsolutions.net



            PurpleMath: https://www.purplemath.com/






            share|cite|improve this answer









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              2 Answers
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              2 Answers
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              $begingroup$

              I would suggest Khan Academy,



              https://www.khanacademy.org/math



              they have this dividsion on grades or topics, i believe they enter in this kinds of small proofs, i understand you are being asked questions about generalizations, and it i think it depends on how hard a topic is to generalize without using further concepts






              share|cite|improve this answer









              $endgroup$


















                0












                $begingroup$

                I would suggest Khan Academy,



                https://www.khanacademy.org/math



                they have this dividsion on grades or topics, i believe they enter in this kinds of small proofs, i understand you are being asked questions about generalizations, and it i think it depends on how hard a topic is to generalize without using further concepts






                share|cite|improve this answer









                $endgroup$
















                  0












                  0








                  0





                  $begingroup$

                  I would suggest Khan Academy,



                  https://www.khanacademy.org/math



                  they have this dividsion on grades or topics, i believe they enter in this kinds of small proofs, i understand you are being asked questions about generalizations, and it i think it depends on how hard a topic is to generalize without using further concepts






                  share|cite|improve this answer









                  $endgroup$



                  I would suggest Khan Academy,



                  https://www.khanacademy.org/math



                  they have this dividsion on grades or topics, i believe they enter in this kinds of small proofs, i understand you are being asked questions about generalizations, and it i think it depends on how hard a topic is to generalize without using further concepts







                  share|cite|improve this answer












                  share|cite|improve this answer



                  share|cite|improve this answer










                  answered Nov 8 '18 at 21:42









                  Daniel MoraesDaniel Moraes

                  314110




                  314110























                      0












                      $begingroup$

                      Alright, here are the sites that I have been using.
                      As always, Khan Academy is good. Some of the content needed is in Algebra 2, and some of it (differentiation/integration) is in the AP Calculus classes.



                      ExamSolutions.net: https://www.examsolutions.net



                      PurpleMath: https://www.purplemath.com/






                      share|cite|improve this answer









                      $endgroup$


















                        0












                        $begingroup$

                        Alright, here are the sites that I have been using.
                        As always, Khan Academy is good. Some of the content needed is in Algebra 2, and some of it (differentiation/integration) is in the AP Calculus classes.



                        ExamSolutions.net: https://www.examsolutions.net



                        PurpleMath: https://www.purplemath.com/






                        share|cite|improve this answer









                        $endgroup$
















                          0












                          0








                          0





                          $begingroup$

                          Alright, here are the sites that I have been using.
                          As always, Khan Academy is good. Some of the content needed is in Algebra 2, and some of it (differentiation/integration) is in the AP Calculus classes.



                          ExamSolutions.net: https://www.examsolutions.net



                          PurpleMath: https://www.purplemath.com/






                          share|cite|improve this answer









                          $endgroup$



                          Alright, here are the sites that I have been using.
                          As always, Khan Academy is good. Some of the content needed is in Algebra 2, and some of it (differentiation/integration) is in the AP Calculus classes.



                          ExamSolutions.net: https://www.examsolutions.net



                          PurpleMath: https://www.purplemath.com/







                          share|cite|improve this answer












                          share|cite|improve this answer



                          share|cite|improve this answer










                          answered Dec 18 '18 at 21:45









                          kumikankumikan

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