teacher April 8, 2022 6:46 pm High School Calculus Teacher Celebrates 90th Birthday Northern Virginia Bureau Chief Julie Carey reports on the 90th birthday of Lou Kokonis, who teaches calculus at Alexandria City High School. Local 3:08 Family holds memorial for brothers, 3 and 6, who died after Clifton house fire 3:24 Emotional testimony at sentencing hearing for teen convicted in fatal crash 2:27 Driver convicted for high-speed crash that killed 2 Oakton High students 2:12 Virginia middle schooler gets crash course from the FBI 3:33 Driver convicted for high-speed crash that killed 2 Oakton High students