Thejomaya, a preschool and after school centre at Karpagam Avenue, R. A. Puram, will be celebrating its 10th annual day on April 7 at Bharatiya Vidya Bhavan, Mylapore. The chief guest is Sujatha Gupta, Indian Defence Estates Service (Retd). At East Mada Street, Mylapore, 11 a.m.