Here's a textbook assigned in at least one other Gordon class. It presents a model of teaching mathematics that is far more engaging for students than what you and I likely remember. It's free by using your Gordon library number, so this could save you about $40 as it did for me.
Annenberg Learner Interactive website that covers many content areas, including math, science, history and language arts. This site has many layers to it with lessons for upper elementary through high school, and a video library for teachers.
ZooBurst is a digital storytelling tool that lets anyone easily create his or her own 3D pop-up books.
On this site students can create their own digital storybooks. Students can also use this site to write reports and to deliver presentations. They can choose the 3D images from the large collection of library clipart that is provided on Zooburst. They can also add chat bubbles to these images. These books can be shared with others through a hyperlink.
This website includes interactive hands-on activities for Pre-K to 12 in the areas of Numbers and Operations, Algebra, Geometry, Measurement, and Data Analysis & Probability. These are great for use with the SMARTBoard, on individual computers for practice, or even just projected onto a screen and done as a class activity.