Parents learn to pick their battles. It's crucial for survival. When it comes to screen time? That's a fight just about every parent now struggles with. On one hand, you sometimes just want some peace ...

What does the Khan Academy offer? The tagline on the academy’s website says it all: “A free world-class education for anyone anywhere.” Now, with the Khan Academy app for the iPad/iPhone, anyone in ...

All products featured here are independently selected by our editors and writers. If you buy something through links on our site, Mashable may earn an affiliate commission. Khan Academy's math lessons ...