updated 05/14/2013 AT 9:10 AM ET
•originally published 05/14/2013 AT 8:25 AM ET
“Things have appeared normal. The kids have kept their schedules as usual,” a source tells PEOPLE. “They have been in school during the day and have attended after-school activities like they always do.”
Less than two weeks later, on Valentine’s Day, Jolie and Pitt took their 4-year-old twins, Vivienne and Knox, to the Natural History Museum in Los Angeles, where the family explored the dinosaur hall and Discovery Center.