Boss, Suzie. "Top Ten Tips for Assessing Project-Based Learning." Edutopia 2011. Web. 21 Mar. 2011.
"Challenge Based Learning." About Challenge Based Learning. Apple. Web. 21 Mar. 2011. < http://ali.apple.com/cbl/ >.
"How Do You Come up with These Project Ideas?" Experts & Newbies | Bloggers on Project Based Learning. Buck Institute for Education, 06 Oct. 2010. Web. 21 Mar. 2011. < http://biepbl.blogspot.com/2010/10/how-do-you-come-up-with-these-project.html >.
Johnson, Laurence F., Rachel S. Smith, Troy J. Smythe, and Rachel K. Varon. "Challenge-Based Learning: An Approach for Our Time." The New Media Consortium (2009). Web.
Larmer, John, David Ross, and John R. Mergendoller. PBL Starter Kit: To-the-point Advice, Tools and Tips for Your First Project. Novato, CA: Buck Institute for Education, 2009. Print.
Lenz, Bob. "Evidence That PBL Works | Edutopia." K-12 Education & Learning Innovations with Proven Strategies That Work | Edutopia. Edutopia, 30 Sept. 2010. Web. 21 Mar. 2011. < http://www.edutopia.org/blog/project-based-learning-findings-study-bob-lenz >.
Markham, Thom, John Larmer, and Jason Louis. Ravitz. Project Based Learning Handbook: a Guide to Standards-focused Project Based Learning for Middle and High School Teachers. 2nd ed. Novato, CA: Buck Institute for Education, 2003. Print.
Moursund, Dave. "Problem-Based Learning and Project-Based Learning." University of Oregon. 11 Nov. 2007. Web. 21 Mar. 2011. < http://pages.uoregon.edu/moursund/Math/pbl.htm >.
"Project-Based Learning Strategies and Research for Educators." Online Schools and Accredited Online Degrees from Online Colleges. Guide to Oniline Schools. Web. 21 Mar. 2011. < http://www.guidetoonlineschools.com/online-teaching/project-based-learning >.
Starr, Linda. "Education World." Education World: The Educator's Best Friend. Education World, 2005. Web. 21 Mar. 2011. < http://www.educationworld.com/a_curr/virtualwkshp/virtualwkshp >.
"What Is Project-Based Learning?" Project Based Learning. Web. 21 Mar. 2011. < http://pbl-online.org/About/whatisPBL.htm >.