The following step would be to collect data and make observations, so that a hypothesis can be formed.
Ptolemy would have made his observations in Egypt probably Alexandria around AD120 up to his death in AD168.
Make sure it's in date and nothing been opened or bumbled
He urged people to use their sences to make observations, just as scientist today make observations
Practice improves your ability to make accurate observations.
Make observations
Scientists make observations about the natural world through experiments and try to explain the phenomena that they observe. Scientists then attempt to explain the occurence of all of these observations in an overarching theory. For example, an observation would be seeing an apple fall to the ground and making measurements. The next step would be taking all of these observations which could include things such as the movement of planets and other cosmic bodies to form the theory of gravity which attempts to explain these observations.
Observations
Make observations
observations
Make observations
Using observations, you can discover patterns in data and make an inference