Stop "summer slide" and get ready to return to the classroom for 2nd grade with Sylvan's SUMMER SMART Workbooks Research shows that kids can lose up to 2.5 months' worth of hard-earned knowledge from the previous grade over the summer vacation break. That's why we at Sylvan Learning--America's #1 tutoring brand--created the SUMMER SMART workbook series Packed with fun exercises and teacher-created activities, this...