A few years back, I managed to acquire a visualiser through collecting Tesco vouchers. I was to trial using it in class with the intention of then purchasing them for other classes if worthwhile. It quickly transformed my teaching! Being able to demonstrate examples through shared writing, share children's work with the whole class, uplevel and edit children's work were just a few ways I used it to enhance my teaching. It led to the school buying a visualiser for each class teacher - each costing approximately around £200-£250 each at that time, this may now have changed.
About a year later, we made the decision to invest in iPads (costing around £250 each at the time, the same price or even cheaper of a visualiser,) and this made the visualisers almost redundant along with the interactive whiteboard. One of the many great features of the iPad is that it can easily become an interactive visualiser, but what sets it apart, is the fact it is mobile and therefore gives teachers the ability to have a visualiser in their hands wherever they are.
There are a few ways in which to connect your iPad to your projector for display - either through software on a computer or hardware connected directly to the projector. This fantastic poster from the inspirational @iPadWells demonstrates some -
Here are some ways to turn your iPad into a visualiser -
1 - Airserver (Approx £7) - For me, this is the best software to mirror your iPad screen. Available for both PC and Mac this works brilliantly well (most of the time!) The recent update now allows you to record your iPad screen too which provides teachers with a great way of creating tutorial videos. For the price it is fantastic and as long as your wifi is strong and allows access for it to work, I don't think there is anything better. Your PC will need Windows 7 or above for it to work but here is a short video demonstrating how it works -