One of the training tools that I find extremely powerful, yet grossly underutilized are flipcharts. I have a huge bias towards flipcharts and whiteboards as opposed to Powerpoint/ Keynote/ Impress (I will refer to this group of tools as Powerpoint for want of a better term in my vocabulary) for two reasons:
1) Flipcharts are low tech and can be used for delivery in a variety of training environments; especially those with limited equipment. For eg: I've trained in University environments with limited or no electricity supply and flipcharts really come in handy in such situations
2) The second reason is simply the issue of learner experience and I am perhaps going to spend some time elaborating my thoughts about this. I hear a lot of arguments in favor of Powerpoint is that "its a visual tool". Yes it is; but not one thats always apt in a training environment. I completely appreciate the use of Powerpoint in presentations where the idea is to get across information and not really to transfer or reinforce learning. That said, in a learning environment, if Powerpoint slides with a lot of text on them are your only visual tools, you should be concerned about the effectiveness of your learning experience. There are a few reasons for this.
When we as trainers build a flip chart based on discussions in class, it provides a strong visual anchor for the shared learning that the group arrives at. When building a flipchart I usually gesture as if I am collecting information from the class and place that on chart itself. This, I observe helps students connect better to the learning they've contributed to. On the other hand, a Powerpoint presentation is a static experience that you cant alter in class. A lot of Powerpoint delivery is aimed at conveying facts as against building shared understanding; which pretty much kills the whole aim of generative discussion.
When you extend this to a course that runs for multiple days; a Powerpoint presentation from the first day, is an experience that is long forgotten by your audience, by the third day. On the other hand if as a facilitator you've been able to build a flipchart with the class and you can place that summary on one of the walls, it provides a strong visual anchor for students to rock back into the previous experience and recollect the shared understanding you've arrived at.
I understand that a lot of trainers use Powerpoint presentations as prompts for their delivery. Often the reason not to use flipcharts is that we don't remember the diagrams or flowcharts that we wish to put up on the chart. Here's a tip -- Use one of the top corners to draw a small and light pencil sketch of what you wish to finally put up on the chart. Your students will not be able to see this and you can also provide the dynamic experience you're trying to create.
I must say that I've seen some intelligent use of presentations in training as well; especially the Takahashi style. I find this a lot more visual than slides with multiple lines of text. These are good placeholders for conversation and don't reduce your training session to just reading from slides.