New version of method

Today, I asked Ms Zhang to paste my newly written method on my report.

Report

I have finished writing my report in the long weekends and today I have written my method in a new way (without using numbers).

Thoughts about the results

My hypothesis turned out to opposite to the results because I proposed that the square aluminium would be the strongest but it turned out it was the weakest. I thought it was the strongest because it contained metal which made me think of the strength of steel. However, plastic is flexible and circle has the largest general width which is the diameter of 5.6cm (2.8cmX2). The square and the rectangle have about the same strength so the large range of results were mainly due to the weakness of aluminium foil. Bags distributed from shops are made of plastic with circular endings which is more environmentally friendly than paper bags as they are biodegradable. Also, this agreed with my results because circular plastic was the strongest material and/or shape. Cling wrap is a thinner form of plastic which clings together for strength.

This is the setup of my experiment.

This is a picture of me testing the strength of a 12.5cmX2cm paper by using it to hold the plastic bag containing the weight. I had a stopwatch to make sure this is a fair experiment.

This is a picture of me testing the strength of a piece of 5cmX5cm aluminium by using the paper to hold onto the plastic bag containing 200g weight. I have a stopwatch to make sure I hold it for 10 seconds to ensure a fair experiment.

This is a picture of me weighing the plastic bag in which the weights are held and what the material/shape holds on to. This is to make the results more accurate by using the weight of the bag as the starting weight and adding it on to the other weights.