California Common Core State Standards (Official State Website):
http://www.cde.ca.gov/be/st/ss/documents/finalelaccssstandards.pdf
https://www.ixl.com/signin/lacanadaunified
https://connected.mcgraw-hill.com
www.starfall.com
www.pbskids.org.
www.nickjr.com
www.abcya.com