I was reading the "Everything You Need to Know Encyclopedia for Inquiring Young Minds" with my kids today. There is a website listed with each topic for expanded learning. I really likes these and thought someone else might too.
www.biology4kids.comwww.chem4kids.comwww.cosmos4kids.comwww.geography4kids.comwww.physics4kids.comwww.numbernut.com (didn't check this one out yet)
The first was listed for a page on plants and the others were listed in a tour from the biology page, I had used them before when we were googling something one day and then lost the site address. Now I found them again!
