Columbia Heights High School - Cohian Yearbook (Columbia Heights, MN)

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3 . Positive and negative numbers are the After writing on the board a problem concerning the day's assignment, Mr. subiect of Dave Doeblar's dissertation. Torguson poses a question to his intent MIA students. Roger Sadlowsky, Ed Torguson, Don Greenwaldt, David Warren, Bradley Baldwin, and Jerry Ryding. MR. BALDWlN: Higher Algebra and Trigonometry, ln- troductory Algebra and Wood Shop Il, B.S. - Mankato State College, is interested in remote control model air- planes. MR. GREENWALDT: Algebra l, Geometry and Higher Algebra and Trigonometry, B.S. - St. Cloud State, M.S. - University at South Dakota, MR. RYDING: Geometry and Physical Science, B.S., MS, - St. Cloud State, JV Baseball coach and Math Club advisor, likes hunting and fishing. MR. SADLOWSKY: Introductory Al- gebra, Modern Introductory Analysis, Higher Algebra and Trigonometry, Probability and Statistics and Matrix Algebra, B.S. - St. Cloud State. MR. TORGUSON: High- er Algebra and Trigonometry and Modern introductory Analysis, B.S., M.S. - St. Cloud State College, Math Club and Chess Club, interests are hunting, water skiing, and boating. MR. WARREN: Higher Algebra and Trigonome- try, Foundations ot Math and Geometry, B.A. - Augsburg College, traveled back and forth to St. Cloud last summer. 29

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Concealing the chessboard he has drawn on his desk, Mike Krawczynski pretends to compute a problem on a box. Expansion Continues for Math Curriculum With New Materials Anyone tor chess? A special new unit in some math classes brought students to direct confrontation over chess boards. The unit helped them develop their pow- ers ot reasoning and visualization ot ge- ometrical patterns. When not holding chess tournaments, the students were taught by customary methods from various new textbooks in the math department. V Another new addition was a typewrit- er with a math keyboard. This machine allowed teachers to type entire tests and worksheets without having to put in mathematical symbols by hand. As his students follow along, Mr. Ryding outlines a proof ot the properties ot a parallelogram. Hoping that they have outwitted the book, Mr. Sadlowsky's probability class anxiously await his studied decision on an answer.

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Experiments in Phgsics Class Help to Generate Enthusiasm Hair-raising adventures, including ex- perimentation with a Van de Graff elec- trostatic generator, were common to physics classes. Under Mr. Hamerston's guidance, students conducted scientific observations ofthe properties of energy and force. Chemistry classes engaged in experi- ments such as collection of gases and testing of different types of water. A new grading system was initiated, with no penalty for guessing. Slithering around the science depart- ment was Sam the Snake, who, among other creatures, was the subiect of ex- periments and lab reports for biology students. Mr. Dyar, a former teacher at Columbia, ioined the faculty. Thomas Brady Mervin Mikkola, Marlowe Hamerston, and Larry Dyar. Current being registered on an ammeter is measured by Jerry Trupe in fourth hour Physics class. Discovering a new bacteria in Biology ll proves to -be an adventure for Dave Hughes.