How Things Work

https://www.amazon.com/How-Things-Work-Books/b?ie=UTF8&node=3250

Maybe a good edu for kids to learn from

Please note: don’t expect to learn everything: in studies your doing well if you remember 1 out of every 4 things [usually]. But thats usual studies, In an encyclopedia or similar you probably wont learn it all at once or want to learn it all usually but you may get some useful bits.