A Field Guide to the Ants of New England by Aaron Ellison, Nicholas Gotelli, Elizabeth Farnsworth, and Gary Alpert. 2012. Yale University Press, New Haven, CT.
Journey to the Ants: A Story of Scientific Exploration by Bert Hölldobler and Edward O. Wilson, 1994, The Belknap Press of Harvard University Press. A lushly illustrated, large-format introduction to ants and the study of ants written in an accessible style.
Ants of North America: A Guide to the Genera by Brian L. Fisher and Stefan P. Cover, 2007, University of California Press. Not exactly a field guide, but with comprehensive keys to the genera, “diagnostic remarks,” and notes on distribution and ecology. Illustrated with excellent photographs of specimens.
The Ants by Bert Hölldobler and Edward O. Wilson, 1990, The Belknap Press of Harvard University Press. The definitive work on the ants of the world and the world of ants, this hefty, abundantly illustrated volume won a Pulitzer Prize for nonfiction. It is a work of rigorous science, but written in a highly readable style.
Katherine Bennett, a fifth-grade teacher in Ashburnham, and Aaron Ellison have developed a website for K-6 teachers to use with their students to learn about ants.
Lord of the Ants classroom activity, from PBS's Nova.
Play Nova's Amazing Ants Game, and learn about several unique species of ants.