castle. before marking the occasion, she and other royals spent the day in cornwall making several appearances at the g7. max foster, our royal correspondent, takes a look. >> reporter: the queen isn't a political leader so she's less div divisive. add to that the longest serving head of state and she earns the center of the photo. the royals were out in force starting with a joint visit to a school by the duchess of cambridge and the first lady, herself, an educator. >> i agree. >> reporter: the children keen to show off their pets. >> we have brian and -- absolutely. the duchess keen to speak to her pet cause of children's well-being. during a discussion with british and american learning experts. >> early childhood education is so important. >> best investment for our