In order to organise your agenda and take the most advantage of being part of the MIT community, I would recomend you to visit http://hrweb.mit.edu/worklife/welcome.
The MIT Work-Life Center offers a range of direct services and spearheads projects that enhance the quality of life for the MIT community. Services such as consultations and referrals are available at no cost to MIT students, staff, and faculty, as well as to their partners and families.
There you will find a lot of interesting conferences and courses for you and your family.
One of the most famous sigthseeing is tour Duck Tours.
It is very funny, even for children and the drivers will explain everything in your language. If you get the tickets in Stata Center (Vassar street) you will get an important discount.
Enjoy the tour!