Links about the Ancient Mayans:
http://www.bigmyth.com/2_eng_myths.html
http://www.mayankids.com/mkintro.htm
http://www.ducksters.com/history/aztec_maya_inca.php
http://www.historymuseum.ca/cmc/exhibitions/civil/maya/mmc08eng.shtml (Modern Maya)
http://www.criscenzo.com/jaguarsun/mayanow.html (Modern Maya)
http://www.bbc.co.uk/education/clips/zsdrqty (Introduction to Ancient Maya video)
http://www.bbc.co.uk/education/clips/z2pfgk7 (Modern Mayan family video)
http://www.dkfindout.com/uk/history/mayans/
http://www.history.com/topics/mayan-scientific-achievements (Ancient Mayan scientific achievements)
http://www.paleoaliens.com/event/mayan_glyphs/ (Translate English into Ancient Mayan glyphs!)
Links to research how the Ancient Maya civilisation ended:
http://mayas123.weebly.com/decline.html
https://www.thoughtco.com/what-happened-to-the-ancient-maya-2136182
https://ambergriscaye.com/museum/digit9.html
http://mayas.mrdonn.org/empire.html
https://www.dkfindout.com/us/history/mayans/end-mayan-civilization/
https://science.nasa.gov/science-news/science-at-nasa/2009/06oct_maya/
Links about the Aztecs:
http://www.aztec-history.com/mayan-civilization.html
http://www.primaryhomeworkhelp.co.uk/aztecs.html