My mom wants to do baking but her oven doesn't have bottom heating element. It only has an element on top, with a fan at the back.  She told me that she can't make me a good pizza or cake without it.  Is there any way around? 
Many modern ovens seem to have unusual element configurations, but with a fan it makes no difference, just use as the oven manual indicates  Cooking a pizza in any domestic electric oven is tricky, as it requires more heat than an electric oven can generate. Using a metal or stone slab helps 