Forget chalkboards and whiteboards in the classroom -- Dell thinks tech is the answer. It's launching a 70-inch touchscreen, the C7017T, that's designed to replace interactive whiteboards in schools and boardrooms. You probably wouldn't want this at home given the 1080p resolution, but it can handle 10-finger touch and includes two pens for collaborative sessions. More importantly, it's downright frugal compared to Microsoft's 84-inch Surface Hub. Dell's $5,000 price doesn't include a computer, but it's still going to take a much smaller bite out of the school budget.