For the last several years I’ve been waiting for a web-based “clicker” program that will work with smartphones, laptops and not require clickers. Poll Everywhere works pretty well and is based on text messages. I find it a bit limiting. In addition there are audience size limitations and other issues. Recently in UKanTeach’s PBI class the students researched technology apps for the classroom. I did not see the presentations but an alternative to Clickers was presented by Ann Gorsuch–Socrative (along with a short version of an Algebra Book she wrote in IBook Author.) On the new AP Biology Community discussion forums Kristen Gabel also recommended Socrative. Check it out, I think this has great potential for the classroom–and right now it is free. The students can input through any smartphone or computer that is connected to the web.