The site below is pretty good and has a large number of links. It is not perfect, however, and fails to include the fireplace and chimney among medieval inventions.
I wrote what I hope is a pretty good description of medieval advances as an answer to the related question linked below.
Club Penguin
There are many good websites which are specifically made to cater 6-8 year old children. Mostly the websites are associated with child learning and development.
I have added a few websites in the related links below that I have found to be appropriate for children.
The Dark Ages were also known as the Medieval times. They call it the Dark Ages because there was blood, gore, diseases, and the peasants weren't treated very well. There was also Druids and superstitious beliefs. But a lot of good things happened, too. Things were invented, and there were knights and castles. The Medieval people wrote some pretty good stories, too. That's where the classic 'Save the Princess' thing comes from! So the Dark Ages were kind of good, and kind of bad at the same times.
Girlsense.com is for girls between the ages 8 and10 or older your choice thank you good bye.
pbs kids.org club penguin Webkinz maybe cartoon network.com
Barbie.com, Webkinz.com Horseland.com Nick.com MoshiMonsters.com Neopets.com
The Crusades: Explore the motivations, impact, and consequences of the medieval holy wars between Christians and Muslims. The Black Death: Investigate the causes, spread, and social, economic, and cultural consequences of this devastating pandemic that swept through Europe in the 14th century. Feudalism: Discuss the hierarchical structure, roles, and relationships within the feudal system, including the obligations and privileges of lords and vassals. Medieval Women: Examine the roles and experiences of women during the Middle Ages, including their contributions in areas such as religion, literature, and politics. Medieval Science and Technology: Explore the advancements and innovations in fields such as astronomy, medicine, architecture, and warfare during the Middle Ages.
The Renaissance Gazette The Medieval Times News The Middle Ages Chronicle The Kingdom Tribune
First pick a narrowly defined topic, such as: What houses did serfs live in? What did medieval people eat? What technologies were developed in the Middle Ages? When was the chimney invented, and how did people cook without one? Then do research. Ask questions in Wikianswers. Do not believe the first answer you get, unless it has good links. Follow the links. Wikipedia has a lot of articles, and the following would work for the above (found by following the "see also" links in Wikipedia articles): Wattle and Daub Medieval Cuisine Medieval Technology Communal Oven Chimney Then write. To write, first summarize what you tried to find out, then say what you found out, then draw a conclusion.
RetailMeNot offers Medieval Times coupons: http://www.retailmenot.com/view/medievaltimes.com Many similar websites offer coupons as well, just make sure the coupons are for your location. Good luck!
You might try the Wikipedia article on marriage, which as a section on the history of marriage in Europe. There is a link to it below.