This document discusses concerns about differentiating instruction and provides online tools and resources to help save time and manage a differentiated classroom. The top 8 concerns about differentiation are preparation time, class size, meeting student needs, management strategies, lack of resources, independence, implementation, and time. Websites like Portaportal, SurveyMonkey, Rubistar, and SpellingCity are recommended for bookmarking pages, creating surveys, rubrics, and spelling tests online. Other differentiation resources include virtual manipulatives, timers, dice, charts, and timelines. Ohio's Treasure Chest and links from Hoagies Gifted are also mentioned.