Bread Experiment – Part 2

You might remember last week, we set up an experiment to see which piece of bread would be the mouldiest. We left the bread for a week in a sealed bag and the results are in…

The winner of the mouldiest piece of bread was dirty hands!

We have learnt the importance of washing our hands after we go to the toilet, before we have something to eat and if we sneeze or cough into our hands. We don’t want the germs to get into our bodies and make us poorly. We have seen first hand how germs can be transferred and can make us poorly.

Bread Experiment – Part 1

Today we set up an experiment in class. We have been learning about how germs can be transferred from one place to another and about the importance of washing our hands.

We asked the question ‘Which piece of bread will be the mouldiest after a week? We used four pieces of bread and put them in different situations. The first was a control piece that no one touched with their bare hands. The second piece was touched by dirty hands. The third piece was touched by clean hands and the fourth and final piece was touched by the iPad.

We then made a prediction as to which piece we though would be the mouldiest after a week. Come back next week to find out our results!

Which one do you think will be the mouldiest?

Super Scientists

Linked to our work about Florence Nightingale, we looked at the effect germs can have on our bodies and how quickly they can make food mouldy.

We turned into Super Scientists and we had a go at testing our reflexes as well as our sense of smell and touch. It was difficult to guess what the smells and the objects were without using our eyes.

Then we set up an experiment to see how germs could make food mouldy. We used three pieces of bread but did different things to each one.

img_4589

  • In the first – we called this CONTROL as we didn’t touch the piece of bread with our hands. We used tongs and placed it into a clear bag.
  • In the second – we called this UNWASHED as we made sure we put lots of germs on the piece of bread by rubbing it between our hands before we placed it into the clear bag.
  • In the third – we called this WASHED as we made sure we washed our hands carefully with soap and water before we rubbed our hands on the piece of bread and placed it into the clear bag.
  • All three bags were placed in the same place so that we could make sure it was a fair test.

We continued to be Super Scientists by making a prediction about which piece of bread would have the most mouldy. Our predictions are below:

  • 2 children thought the CONTROL would have the most mould.
  • 25 children thought the UNWASHED would have the most mould.
  • 3 children thought the WASHED would have the most mould.

We left the bread for a week and our results are below:

  • All three pieces of bread had gone mouldy.
  • It was clear from looking at the pieces of bread that the UNWASHED had the most amount of mould on it, followed by the WASHED and finally the CONTROL.

img_4590

As a class, we discussed why the UNWASHED had the most amount of mould on it. It had the most amount of germs on it and the control had none because it hadn’t been touched by anyone’s hands.

We know how important it is to wash our hands before we eat and after we have been to the toilet as we don’t want these germs inside our bodies.

If they can turn bread mouldy, what can they do to the inside of our bodies?