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Let´s make a review of the second part of the unit.

LET´S LEARN A LOT WITH THE VIDEOS ABOUT PREHISTORY AND THE PERIODS OF IT!

ONE MINUTE OF FUN, COOL AND  BIG ACTION!!

UNGA , BUNGA!!





https://www1.udel.edu/biology/ketcham/microscope/scope.html


http://sciencenetlinks.com/interactives/AllSystems.swf