There are different ways of dealing with it.
Some instructors choose to remove all math from their lectures.
But increasingly, instructors feel that a student cannot appreciate astronomy without some exposure to math. This outlines the roots of the problem as this author has researched it. It is written more for the math-phobic who wishes to confront the problem than for someone attempting to teach some astronomy with math to such a person. However, the examples of how to approach word problems, fractions, big numbers and even calculus may be helpful to you in developing ways to present mathematical material. Jeff Bennett, our guest speaker, has taught a class in quantitative reasoning as well as written several textbooks on related subjects.