HELPPPPP!!!!!!!!

Well inoffensively speaking, I adore Phy,Chem, Math and Computer Applications.... So my brain is conditioned towards understanding and not mugging up.... We have a total of freakin, 15 chapter of history, 5 of civics and 17 of geography...... I study one chapter, able to remember it, then as soon as I go to the next one I forget the last chapter....

So how shall I study, because teachers brag that HCG is scoring???? 😭😭😭😭😭😭😭