JAFFNA, Sri Lanka —Kala Namasivayam, a chemistry teacher whose resonant voice and patient instruction guided generations of students in northern Sri Lanka through one of the school system’s most demanding subjects, chemistry, died on Thursday. She was 59.
The cause was cancer, according to doctors who treated her.
Ms. Namasivayam taught at Kokuvil Hindu College and at Jaffna Hindu Ladies' College, two of the district's prominent schools, and for years ran private chemistry classes that drew students well beyond her own classrooms. To nearly all of them she was known simply as Kala Miss.
Her reputation rested on two things: a voice that reached the back of any room and held it, and a method that took the mystery out of a subject that defeats many students. Chemistry, in Sri Lanka's advanced-level examinations, functions as a gate — it decides who enters the medical and engineering faculties and who does not. Ms. Namasivayam's students arrived knowing that, and left saying she had made the subject seem plain.
She never married. Former students, describing a life given over almost entirely to teaching, used an affectionate phrase: she was married to chemistry.
Word of her death drew tributes from across Jaffna's educational community, where a teacher of long standing can leave an imprint on several generations of the same family. Former pupils described someone who took a personal interest in their progress and remained unassuming despite the standing she had earned.
"She was a humble soul and a lovely person," one former student said.
Among those who studied under her was Vithoosan Sahathevan, now a neurologist practicing in Sri Lanka. Writing on Facebook after her death, he said he remained grateful for her guidance and her blessings. "At least now you can give rest to your voice," he wrote.
In the end, what they remembered was not only the chemistry.
