The closure of schools because of the pandemic and the advent of widespread virtual learning has impacted students of all ages — but particularly the youngest children.Research suggests that the learning missed during this period could have lasting impacts.What is the educational cost of pandemic learning and how are schools trying to get children back to class amid the Delta variant?Guest: Dana Goldstein, a national education correspondent for The New York Times. Sign up here to get The Daily in your inbox each morning. And for an exclusive look at how the biggest stories on our show come together, subscribe to our newsletter. Background reading: What was supposed to be a new, relatively normal year has become a politicized, bewildering experience for many parents, students and educators.For more information on today’s episode, visit nytimes.com/thedaily. Transcripts of each episode will be made available by the next workday.