OT: a short presentation to a group of primary school children about radio

[Elecraft mailing list]

Hello Elecrafters,
It is off-topic and please press delete if you don't want to read.
I am going to give a short presentation to a group of primary school children (age below 12) about the application of radio / wireless in our daily life.  I would like to take this chance to give them some introduction of amateur radio.
If any of you have done similar talk before, would you mind sharing with me your presentation materials?  Your copy right is duly observed and I will acknowledge the source of materials.
On the other hand, if you consider there are interesting materials in you tube, please share me the weblink.
Any assistance will be appreciated.  Could you please reply off-the-list?
Thanks & 73
Johnny VR2XMC
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