These are great math games for young kids! The volume game near the end is especially fun. - Ben Wynn
I use this website every year to help teach persuasive techniques.
Go to pbskids.org for tons of cool games; activities and parent and teacher information.
Fourth Grade . Grade by Grade Learning Guide . Education | PBS Parents
This site has some great links to science games kids will love!
My toddler doesn't get much screen time, but loves the videos app! (My fav is Sid the Science Kid;) )
Cyberchase is chock full of great math learning games!
Papa Piccolo---science experiment-- Peripheral Vision | PBS Kids
PBS Kids Bookfinder