Web Sites
SCIENCE
National Science Teachers Association
Tips for parents to help their kids with science; an excellent list of websites about science for kids at Science Sites.
TryScience
A website of activities, experiments, tips for parents, and how parents can make sure that science is provided in the schools.
Helping Your Child Learn Science
A guide to parents with hands on activities by age group.
National Education Association
Raising scientifically literate children; what to look for in your child's math or science class.
Dragonfly TV
Kid Source Online
Kid Source Online
For Girls:
Sci Girls on Dragonfly TV
BrainCake
Grade-specific Skills:
TeacherVision
This site mostly targets teachers though there are resources for parents. There is a yearly membership fee to access lesson plans.
MATH
Helping Your Child Learn Math
National Council of Teachers of Mathematics
Includes a family guide to helping your children with math.
BLOGS AND ACTIVITIES
Science Buzz
Dig deeper into the science that's making the headlines every day, hosted by the Science Museum of Minnesota.
Did You Ever Wonder?
Each month a dozen questions are posed and answered by lab scientists from the Lawrence Berkley National Laboratory on various topics on how things work in the natural world.