Science Buddies: "Ask an Expert"

I need help deciding for how long i should experiment

I am testing goldfish memory using colored thimbles

Also can you explain 5 terms, scientific laws, principles or theories that would be essential to
understanding my project.

I don't understand your question. Are you asking at what timepoints to test the goldfish memory?

Also, can you rephrase the second question? Are you asking about specific terms or laws?