This picture is of the Texas Instruments TI-84 Calculator which I make a lot of use of in my teaching. It’s great for giving students dynamic representations of the concepts they are studying, as well as for playing interactive games which can be tailored to their particular needs. It can also be used to teach programming for those who are interested. This is something which isn’t often taught in schools, but which some students really enjoy. It is a very useful skill in this technological age, and is predicted to become more and more in demand.