Contents in english about Social Science. It's one way to improve my english too.
1r ESO
https://youtube.com/playlist?list=PLBxUoTfE-Ozw9PkJbr9Ui2dWrwn_Or_Lz&si=InY4wcHKW3e190Jd
Pàgina per generar perfils longitudinals
http://www.heywhatsthat.com/profiler.html
