> one of five kids (out of class of 120) that took Calculus I am always puzzled by this. Calculus was 8th - 9th material in Turkey in the 80s. In classrooms wi

> one of five kids (out of class of 120) that took Calculus I am always puzzled by this. Calculus was 8th - 9th material in Turkey in the 80s. In classrooms with 45 - 50 kids per one over-worked teacher. We did set theory and Boolean logic in third grade. I think that is far more useful for understanding mathematical thinking than Calculus is.