if your a girl here are some good ones:
Stardoll
FANTAGE
chicken smoothie
poptropica
shockwave
secret builder
if your a boy:
fantage
shockwave
secret builder
maybe stardoll, maybe
boohoo.com
Well, it honestly depends on the ten year old. But some clean websites that are fun for younger kids include disneychannel.com, nickelodean.com, and millsberry.com.
Myyearbook.com
well there are plenty of fun games and websites for ten year olds. club penguin,primary games etc. You can go on these 2 websites,.. you might like them: www.miniclip.com , www.primarygames.com
webkinz,stardoll,girlsense
miniplanet is fun c:
This website is for teens and preteens with questions about their crush(es)... AND IT'S AWESOME!!!! http://howtoactaroundguys.webstarts.com/
domeinthebehind.com
moshimonsters, catandemyshow.weebly.com (fun to browse around), barbie girls (fun to play), bratz, biguniverse, barbie, animaljam.com and lots more! :)
Well a lot of games are fun.Some areagame.comaddictinggames.comminiclip.comamericangirl.comdisneychannel.comuh......... girlsense.comyahoo.games.comgirlsgogames.comthedollplace.comomgpop.comweeworld.comusa.network.comdressupchallenge.com I hope you like these websites :).
Basketball Swimming
There are loads of cool websites to go on i cant list them all but type into google something like what are some good websites for 12 year olf girls then go through all search matches hope this helps xx