Science Games

IM GETTING A NEW JOB HERE SOON AND IM ALREADY THINKING ABOUT SAVING MONEY AND PUTTING IT ASIDE FOR CHRISTMAS …I HAVE A BROTHER 8 AND A SISTER TURNING 7 ..I WOULD LIKE TO GET THEM PSPs FOR CHRISTMAS..ARE THERE ANY EDUCATIONAL GAMES FOR THERE AGE?
SUCH AS MATH,SPELLIN,SOCIAL STUDIES, AND SCIENCE RELATED?

I am a Educational assistant working with kids with special needs and as part of their program they are learning to use a computer for notes and tests and such. i am having trouble getting their typing fast enough to make the computers useful. i think if they could play games it would be more fun and possibly easier. these kids are in grade 3 and 4. i need the games to be online and free to play without a subscription of any type.

Looking for educational games to stimuate the kids mind , may be computer , board game,Outdoor games, My kids are 4 and 6 and get board easily and end up watching TV . Some thing that will make them enjoy , learn think , become creative. ( geneuine answers please)

where do i download this for free for my kids?thx in advance.

i have a cousin who is 7 years old, she likes Dora the explorer and stuff like that, little kid cartoons, what are some good educational games to buy her for the PC that have DOra the explorer as a character or any other popular cartoon character, i want her to enjoy the games but at the same time learn, whether it be spelling,reading, math etc.

Thanks in Advance

Price range 10-40 dollars

Please tell me

my six year old brother loves online games and is getting bored of the ones on nickelodeon.com, any suggestions?