Asking learners to re-tell, explain or summarise is an effective way of consolidating learning. It’s good to combine with tools that focus less on the technology and more on the message. One such is GoAnimate
Very easy to use – if you can type, you can animate. Pupils can record their own voices, display speech bubbles or get the computer to generate a voice.
There’s a free open service, which is sufficient to explore and understand if it will be of long-term benefit. It is is, you might wish to purchase the more private educational version of GoAnimate for schools.