This page is a site for assessing students. Although you can create quizzes and polls like other site, infuselearning allows to you create assessments where the students can annotate comments or show learning by drawing. Also, you can add videos to send to students. Another plus, any device can be used and it is free.
KET EncycloMedia, your portal to PreK-12 and Adult Ed multimedia from KET and national partners through KET Teachers' Domain, Discovery Education, and KET ED On Demand. This site is classroom gold for both students and teachers.
Free teacher stuff to get your elementary classroom all SQUARED away! (by Squarehead Teachers). This is a teacher blog where the authors shares self-made worksheets addressing a myriad of subjects.