Dinosaurs on a pancake pageAmara looked at dinosaur pages for her school project. The next day a pancake recipe page showed dinosaur ads at its sides. Teo said, "The tablet reads your mind!" Amara tried thinking of a banana, but no banana ads came. Dad explained that a web cookie is not a snack but a tiny note a page can save on a device, a bit like a coat check ticket. Some notes only keep your basket full. But some pages let an ad company save a note too, and notes follow a device from page to page. That is called tracking. "The ad company only repeats what it heard, just like Mango," said Dad. Dad helped Amara switch off the notes the page did not need and clear the old ones, and the pages forgot.