Previous research has offered many pieces of evidence in support of the Big Bang theory, but as the human mind never rests, neither does science. Every day it strives for new discoveries, new evidence, and new ideas which would give us a more complete picture of human reality. This paper's purpose is to propose ways to introduce preschool children to topics which they don't encounter every day, to acquaint them with the laws of nature which affect their lives even when they are unaware of it, as well as to show that children's abilities of comprehension and understanding should not be underestimated. The paper presents two theories of the origin of the universe and suggests experiments with which to help children visualise the evidence for the Big Bang and the ways in which fundamental forces affect nature. Some of the experiments included can be used to demonstrate Hubble’s law and Doppler effect, the evidence for the Big Bang, while others can be used to illustrate the law of gravity and the magnetic field, as a visualisation of the effects of the fundamental forces. While String theory is briefly described, no experiments are given, as scientists are still unable to offer observable evidence to support this theory.