Audience Response Systems in Helpringham #Helpringham https://t.co/3GS5Cy322t
Audience Response Systems in Helpringham #Helpringham https://t.co/3GS5Cy322t
— Audience Response (@ukaudience) February 5, 2019
source https://audienceresponsesystemsuk.tumblr.com/post/182575403543
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