Kodu is one thing Microsoft definitely got right. Kids can create impressive-looking video games in a very short time. There are tons of templates and helpful videos, too.
MIT's Scratch lets kids code simple games, animations, and more. There are lots of videos, tutorials, and examples here to help get you started.
Code.org is a collaboration of some big-time companies to expose more kids to coding. There are lots of things for lots of different ages to explore here.
I enjoyed coding during my time as an engineer, and now there are some really great coding resources for kids out there. Here's a list of some my kids have used, along with some that have been recommended to me.
Fun Games, Videos, and Activities
PBS's ZoomSci has tons of fun activities that explore science and engineering.
BBC also has a great page full of fun science videos and activities.
Science 360 is one of my favorite websites. There are tons of videos that explain the science behind things like sports, innovation, and games. The list of topics is huge - check it out!
Here's a great list of science experiments you can do in your kitchen.
Science is Fun has a bunch of cool experiments you can do at home.
This detailed list of links to websites on simple machines was sent to me by a group of students. It covers things like pulleys, levers, screws, and more.
Here's a list of engineering activities put together by the organizers of Engineers Week, a celebration of engineers that happens every February.
University of Colorado has tons of cool, interactive science and math simulators on PhET.
NSA has a website called CryptoKIds that has lots of games, activities, and resources for kids.
Here's another website recommended by a student scientist. It has links to experiments you can do in different rooms around your house.
Science Fair Ideas and Helpe
Have to do a science fair project? Science Buddies is full of ideas on projects, as well as helpful information on how to execute your project.
Illinois Institute of Technology's Science Fair Extravaganza has everything you can imagine you would need to put together a science fair project.
Although it's no longer maintained, you can still use the information already at ipl2.
There's a large list of energy related science fair projects on Energy Quest.
NASA has a bibliography of resources for science fairs that includes both books and internet resources.
The Los Angeles County Science & Engineering Fair has a great list of resources for completing a project.
It's probably obvious, but I love science. I love to learn the science behind things, and I have fun experimenting. Here are some science-y websites I have found interesting and useful.
"...what you learn today, for no reason at all, will help you discover
all the wonderful secrets of tomorrow." ~ Norton Juster