Showing posts with label experiment. Show all posts
Showing posts with label experiment. Show all posts

Monday, 19 February 2007

6I Woodlice Habitat Experiment







Write the method and results for the experiment, and provide a diagram.

The method should be in bullet points. Give reasons where appropriate, especially to do with your health and safety, or that of the woodlice.



The diagram comes next. Use a ruler and pencil, and label it in pen. It is to make your method clearer.

The results are simply a list of where the woodlice ended up.
Checklist: does the method mention everything listed in the apparatus? Is your method clear enough for someone to repeat the experiment in your absence? Does your method include reasons?

Monday, 5 February 2007

Conclusion to Mould Experiment


Your task is to write the conclusion to the experiment you have just finished.

This can be done by hand, or printed on the computer and stuck into your book.

A conclusion is much more than just stating the results. (That is what the RESULTS section is for!)

First, you need to look at your prediction and say whether this was correct. If it was, try to think of additional reasons why it was correct. If not, try to think of why.

You can provide a brief commentary on the results, but without repeating what the graph clearly shows. Perhaps things happened unexpectedly quickly with one of your pieces of bread? Or the growth of mould was faster as the days went on? Anything that you think is important and needs pointing out.

You should also mention anything that happened when you set up the experiment that wasn't exactly how you wanted it to be, or anything that you did in your observations that might have affected the results.

You could suggest what you might do differently if you had the chance to do a similar experiment, and why.

Examples by 6B:

Butter and Margarine are very similar. This may explain why the results were close, very close. We did predict this, although we can't explain why the mould took so long to grow. But when it did, the growth of the mould was rapidly promoted. Next time, I would like to use different brands of butter.

We did not expect it, but the fungi seemed to be attracted to the control instead of the sugar solution. We think this is because of the moisture in the bread. We think the fungi fed on the moist bread's cells instead of the sugar. You can see from our graph that the control rapidly grew mould while the sugar only steadily promoted it. Next time we would like to try to inhibit mould instead of promote it, perhaps with acid or alcohol.