On weekends and other holy days during the year, Hindus visit temples and offer their prayers. Festivals are an important part of Hindu culture. There are several festivals celebrated during the year with great religious fervour. Most of the festivals of Hindus are associated with Hindy mythology. Vegetarianism is the preferred lifestyle of all Hindus.
Marriage is a major commitment in Hinduism.
Divorce is an exception and not a rule. The nuclear family also includes grandparents. I have put the following ideas together to assist you. I have written two books on Hinduism, but they are suitable only for 13-years and above. The following description should help you to prepare a short presentation for your 7-year olds.