1.-Paleolítico vs Neolítico
https://es.slideshare.net/jessieleininger/the-differences-between-paleolithic-and-neolithic-ages
2.-Primeros Hombres
https://es.slideshare.net/kevinkacel/early-humans-ppt-15269271
3.-Metal Age
https://www.youtube.com/watch?v=5KJjRStm_jA
4.- Metal Age
https://www.slideshare.net/alnugar/metal-age
5.- Games and more links
http://earlyhumans.mrdonn.org/games.html
6.- More!
http://www.kidspast.com/world-history/0001-prehistoric-humans.php
7.- Once upon a time life. Cartoon video.