-We have to write the three methods for finding the density of regular solids, irregular solids and liquid. -We need to have all our results displayed clearly in a table (I've attached a photograph below). -We need to answer: Why was it more accurate to use 10 marbles rather than 1 marble? Why use a ruler for regular solids rather than displacement cans? -We need to write an evaluation, talking about how close to the true densities of the materials our results may be, and where there was scope for error in conducting the experiment. - If this is not too clear, check g00gl3 cl455r00m!