A very cool web-based application that allows you to create interactive posters to highlight photos, written work, websites, etc. Could be a great way for students to create a project for any subject.
Site that presents flexible presentation of many types of curriculum content that students may find engaging. Many interactive activities for re-learning, review and practice.
These activities run online in flash. They are mostly brief explanations of a concept with an interactive exploratory component to illustrate. Interface is engaging, if a bit busy. An engaging way for kids to review math concepts K-6.
Paul Hami has an extensive and well annotated list of online resources - some downloadable, some online interactives, all free. His focus is special ed, but ranges from low-incidence to high-incidence. His blog is well organized, so you can just go there, click on the topic you are interested in, and find all sorts of resources. His explanations and screen shots give you ample information to know whether the resource is suited to your needs before you click on it.