RIVERSIDE – Third-grader Isaac Calderon smiled proudly Friday amid the cheers of his family, teachers and classmates as he was one of six Longfellow Elementary School students awarded a new laptop computer courtesy of Dr. Guillermo Valenzuela’s sixth annual Technology Encouraging College Hopes (TECH) Scholarship Program. Nearly 2,700 Riverside students have participated in Dr. Valenzuela’s popular TECH Scholarship Program since 2008.  The computers are among 18 laptops that was presented to Riverside students this month by Dr. Valenzuela, a longtime Inland physician and education advocate who has worked tirelessly throughout the years to inspire local students to pursue a higher education.