Assembly/ Class/ Group presentation to give a brief overview of
tics and Tourettes Syndrome - Click to watch on 
YouTube

Why not use these conversation starters to get a discussion going and check what they learnt. You could pause after each slide for younger listeners or wait until the end for other listeners. 

What percentage of children under 10, experience tics?

Who can tell me a common tics?

who can tell me a less common tic?

What is a mental tic? 

What should people with tics NOT be asked to do? 

What can make tics worse? 

How can you help someone with tics?