For Parents of Kindergartners: 

Resources to Help Kids Learn About The Alphabet

An Article About Phonemic Awareness 

How to Play Stretch and Shorten  

For Young Readers: 

Starfall

ABCya! Educational Games for Kids

For Independent Readers: 

IXL Language Arts

DOGO News

Ducksters https://www.ducksters.com/

iknowit.com

For Everyone:

Funbrain

For Math Practice:

Xtra Math

IXL Math

Common Core Sheets

Math Flashcards

If you are looking for Leveled Books Leveled with Lexiles, try these sites:

Fab Lexile

Scholastic Book Wizard