If I were to undertake my research again, I wouldn’t change my theories or methodologies as my methodology was suitable for the experiment and the photogate used to measure time had a very low uncertainty. Also, my I wouldn’t change the legendre’s polynomial solution as it as numerical approximation solution to an unsolvable differential equation, which predicts the time period accurately varying with number of decimal places. The only thing I would try to change is probably the graphical comparison of experimental data and the structure of extended essay because I feel the flow of argument isn’t very clear. This would really affect the outcome as it more change in presentation. However, the large angle model is highly accurate and far more so than the small angle model as demonstrated by my investigation. For my research, I looked at research papers from different universities like Penn state, few online sources such as Hyperphysics and physics textbooks, which are highly reliable so the research is appropriate. No specific questions emerged from this investigation. However, I was really surprised and startled to see how a simple differential equation modelling the motion of a time pendulum can have complex numerical approximation solution.