Coming up with a science fair project is a nightmare that keeps high school children awake at night. The competition among classmates to do better than each other is so fierce that no idea seems good enough. If you finally settle on an idea, it most probably will be done by someone else or a senior has already created the same project. This makes you look bad in front of the whole school. If the science project is supposed to be on a particular topics, then you are is a great deal of trouble because it will bring down the number of possible projects to a considerably low number. For parents to help their children is a even greater trouble when they have no idea what their kids do in the classroom.
Sicnec fair projects are mostly given to students for the first time in their lives in the High School. These are supposed to give the children a first hand account of science and get practical experience with the theoretical subjects that study. So what do you base your project on so that it is better than anyone or at the least does not look like you have copied it from somewhere else?
One really easy and popular method to do projects is to explain the problems relating to the environment or the society in a projects. This requires minimal creativity, only requires a clear and explanatory project. You can attempt at solving these problems in your own innovative method. You need to use the topics that are taught to you in your class to base your solutions on. Other projects are those that require loads of innovation to apply what ever one has learned to the experiments that are interactive and interesting. These always are the ones which end up getting the first prize in science fairs.