Photos and presentations in these links:
2º A QUADS
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https://goo.gl/photos/y1YGsS2Jsmg6kpk27
A presentation:
https://plus.google.com/photos/113642014359765916415/albums/6269063438508245153/6269227516280786642?pid=6269227516280786642&oid=113642014359765916415
2º B QUADS
A presentation: