Professor Lauded

Forty years of teaching philosophy at Catholic University has made the Rev. Robert Paul Mohan an institution on the campus in Northeast. Now he has been named 1990 District of Columbia Professor of the Year by the Council for the Advancement and Support of Education.

Mohan, a native of Pennsylvania, came to Washington in 1940 on a full scholarship to Catholic University, then stayed and eventually earned his PhD in philosophy and licentiate in theology there.

His classes include popular topics in philosophy, courses that draw students from a broad cross section of majors. He often focuses on questions of ethics and morality: His latest offering is a class in bio-medical ethics.

The popular professor, who is also the weekend assistant and preacher for Our Lady of Mercy parish in Potomac, said he enjoys teaching: "I find the interaction and interchange with students to be really stimulating. I also find it quite a challenge to get my students to react. That keeps it interesting." YMCA Promotes Aide

Anne Brobby is the new director of international programs at the YMCA of Metropolitan Washington after three years of developing outreach programs in Southwest and Southeast Washington at the Y's Urban Program Center.

The job fits her interests. Several years ago she participated in Crossroads Africa, spending eight weeks in Sierra Leone studying music. Before that, she worked with the International Design Economic Awareness Program, an agency of the Presbyterian Church that organizes trips to Third World countries for clergy and church members. Teacher Science Awards

Twelve D.C. science and mathematics teachers have been recognized by the National Science Foundation with presidential awards for excellence.

Diane Brown, of Jefferson Junior High; Fred Mangrubang, of Kendall Demonstration School; and David Wood, of Sidwell Friends School, won the awards for junior and senior high school science teaching. Charles Hatch, of St. Albans School; Charles James, of St. Patrick's School; and Alma Miller, of Martin Luther King Jr. Elementary School, won the awards for teaching science in elementary school.

For mathematics at the secondary level, awards went to Richard Brady, of Sidwell Friends School; Beryl Jackson, of Douglass Junior High School; and Shirley Smith, of Backus Junior High School. Elementary school mathematics teachers honored were Paula Duckett, of River Terrace Elementary; Susan Hoffman, of Eaton Elementary; and Marva Johnson, of Bunker Hill Elementary School.

The selections were based on nominations made by colleagues, administrators, teachers and parents. All 12 are now candidates for the single Presidential Award to be given this fall to one science teacher and one math teacher in each level from each state and the District.

The science foundation started the Presidential Awards Program in 1983 and has honored 18 District teachers over the years. Established under the direction of the White House, it is designed to honor outstanding teachers and encourage them to stay in the field.