My Take
Has extensive and varying types of activities. Multiple subjects and grade levels are addressed. Have not had any problems with the site itself; loads well, no broken links, etc.
How I Use It
One of my favorite lessons I use this site for is my bridge design unit with my 8th grade students. The Bridge Challenge is a wonderful tool for both ICT/STEM classes and science classes. The students learn about how forces act on objects and get into higher order thinking skills as they are manipulating the site. It is quite informative and engaging for the students.