Mathematica's slide shows are ideal for use in the classroom and can be leveraged quickly as a lesson or lecture. Any presentation created with Mathematica can display live interactive content ...

You can create and present slide shows directly from within Mathematica. Mathematica-based presentations can contain interactive interfaces and live computations, letting your audience see the effects of changes to parameters in real time. Learn more ...

Mathematica's built-in spell checker includes the ability to customize spelling dictionaries both permanently and for individual notebooks. Learn more in this "How to" screencast.