Here are a few sites that you may find interesting.
PBS Coloring/Games
Hopeful Minds
Mandala Coloring Pages- Printable
Discovery Education Virtual Field Trips
College Tours- You Visit (Virtual Tours)
Headspace
Scholastic Learning
The Spanish Experiment Spanish Stories
Body Scan Meditation
Breathing Exercise to alleviate Anxiety and Stress for Teens and Adults
Mindful Breathing Meditation