Prior to any experiment arrange all necessary apparatus or items. Keep a wash cloth handy always. An apron is a must. Perform experiments in a ventilated room. Insist on a peer or guide to be around to help in case of accidents.
A simple experiment of photosynthesis is visible in the growth of a plant. Keep a plant in a dark room after watering it well. Bring the plant to light and place a camera film on one of its leaf. Plants require sunlight to build starch. Carbon dioxide and chlorophyll present in leaves also aid the process. The by products of photosynthesis is the release of Oxygen. When the film is removed the discolouring of the covered area is evident.
Litmus tests are used to find the acid and base in chemicals. When Blue litmus changes to red the reaction is acidic, When Red litmus turns blue the reaction is basic.
Evaporation is the explanation of water cycle. The sunlight evaporates the air from the sea, condenses to form clouds and precipitation to give rain drops. This can be easily explained after boiling water in a vessel, the lid on it condenses to water which falls down the vessel. Thus water cycle is clearly explained.
Static electricity is well experienced by combing hair. Plastic combs gather negative charge and hair has a positive charge. This causes repulsion and hence a bad hair day with hair staying in single strands.
Germination experiments are best tried in summer vacations. The growth of the plant from a seed is surely a pleasure to watch. Water the seed imbedded in the soil. Water activates growth, the seed breaks to cotyledons and the roots emerge. Roots dig to the ground and diversify to more roots. The shaft moves up towards sunlight and soon a plant becomes a tree with leaves and fruits.
Kid¡¯s experiments also involve various projects that provide knowledge and understanding of how to make a volcano . Science also offers ways to make your volcano erupt by the chemical action of vinegar and baking soda.
There are ample of infant activities and other pre school activities that help children to enhance their learning potential. Whether these are school activities or learn by self methods make it formal by jotting them down in journal. This will serve as a guide for the future. Learn from your mistakes and cross check your findings

