I am sorry for off-topic, I'm considering about building an interesting web site for kids. Will possibly commence with publishing interesting facts such as"Banging your head against a wall uses 150 calories an hour."Please let me know if  you know where I can find some related information and facts such as here
 
http://makake.de/
https://mindrights.com/post/168358662853/why-are-powerpoint-presentations-so-fundamental