Discovery Cards of varying levels of difficulty and reward October 28, 2015 Tina G. McDuffie Leave a comment Discovery Cards of varying levels of difficulty and reward Share this:Click to share on Facebook (Opens in new window)Click to share on Pinterest (Opens in new window)Click to share on Reddit (Opens in new window)Click to share on Twitter (Opens in new window)Click to email a link to a friend (Opens in new window)Click to print (Opens in new window)