Constitutional Convention unanimously approved the Constitution in 1787 in Philadelphia, Pennsylvania. Almost all of the 42 delegates signed the document. It then had to be ratified by nine of the thirteen states. Children could find some very interesting questions about the members of the Convention at: Archive
Today is also Constitution Day, when school children across the country learn about the Constitution and its signers. A wonderful book about the signers is Dennis Brindell Fradin’s The Founders: The 39 Stories Behind the U. S. Constitution. Children could also visit http://www.constitutionday.cc/. There they could take a quiz and construct a poster.