Click to go to the site.
This site has 101 sites about social studies. Although some of them are geared towards upper-grades. There are some sites that elementary teachers could use.
This site has a variety of maps that are printable:
Another pin I found and loved, integrates art and social studies. Here's an example from Mrs. Brown's Art Class blog:
Students design their own state stamp.
For more social studies ideas, visit my social studies board: