上一节数学课英语是 "previous math class"。来源是 "previous" 和 "math class" 组合而成。
例句：
"I missed the previous math class, can you give me the notes?" (我错过了上一节数学课，你能给我笔记吗？)
"I'm going to review what we learned in the previous math class before the test." (我要在考试前复习上一节数学课学到的知识。)
"In the previous math class, we learned about quadratic equations." (在上一节数学课中，我们学习了二次方程。)