This website uses sports such as basketball, baseball, and soccer to help students learn mathematics in elementary and middle school. In addition, there are logic and jeopardy games.
I think someone mentioned this in class. The third grade teacher I work with is using Class Dojo and the students love it. I think she has it as a free app on her phone, so as she is walking around the classroom she can give either the whole class, or an individual student some positive reinforcement. She uses just the positive reinforcement buttons, but there are negative behaviors that you can identify as well. You can type in any positive or negative behavior you wish. I think this looks very motivating for students. I would use it on my phone, too, rather than project it because I think it can be very distracting for students to see the avatars and hear the bell ringing when the teacher reinforces a student's behavior.
iPads are in more and more classrooms... This link includes a link to great math apps as well as some good discussion from math teachers using Khan Academy and others.
Scientists seamlessly integrate technology into their work. Gathering and analyzing data and sharing findings with others can be accomplished more efficiently using technology. The potential benefits for students and teachers who utilize technological resources in science are enormous.