Macmillan McGraw-Hill Science
California Science
http://activities.macmillanmh.com/science/ca/gradek/GradeK.html
Be a Scientist (introduction)
Life Science:
Chapter 1: Plants
Chapter 2: Animals
Earth Science:
Chapter 3: Our Earth, Our Home
Chapter 4: Weather
Physical Science:
Chapter 5: Exploring Matter
Chapter 6: Investigate Water