Please choose the correct ending to complete the given sentence: Education and Communications: [header] How to write up a science experiment [title] Start with an abstract. [step] The abstract is a very short summary of the paper, usually no more than 200 words. This will allow the reader to see in short form what the results of the experiment were and its significance.

Ending1: [substeps] The purpose of this short summary is to provide the reader with enough information on the experiment, so they can see if they want or need to read the entire report. One of the first things researchers do is to do a quick search of similar research projects. Ending2: [substeps] Describe your experiment in more detail if you think it may help the reader understand the significance of the experiment. Example: at the end of the experiment, dr. Ending3: It helps you, if you've written it before, absorb information. [substeps] For some labs, a specific abstract can be divided into two sections. Ending4: [substeps] Create a general outline of your experiment, beginning with the research that will accompany it. Don't go too far beyond that outline.

Answer format: ending1/ending2/ending3/ending4