ASTR 131 and ASTR 133 are ideal for the student with little or no prior scientific or mathematical experience who wishes to explore astronomy or science in general, as well as for students preparing to be secondary school science teachers. They also provide a good introductory survey for students planning advanced study of astronomy. ASTR 231 serves as a more in-depth introduction to astronomy. ASTR 133 can be taken as the lab-component for either ASTR 131 or ASTR 231. Students interested in majoring in astronomy at a four-year school should take ASTR 231, as well as PHYS 231 and PHYS 232.