Before half term, year 6 students set up an experiment in science to see if there any germs lurking on their hands and around the school. We pressed swabs from the sink, toilet, toys and coins onto agar jelly, a special nutrient base which germs love to eat. We pressed dirty and clean fingers into the jelly too.
We left the plates to develop for a couple of weeks and today we investigated our findings.
Here are our results. What do you think? Do you think it will make Year 6 wash their hands a bit better before lunch now?
Year 6 are investigating dissolving. Here they are trying to find out if jelly dissolves faster if you chop it up into small bits or not. It was very sticky and the temptation to drink the jelly was almost too much for some to bear.
We had to keep our tests fair by keeping the same temperature and volume of water and by stirring them the same amount.
We also planned a second test to find out if hot water helps dissolving. It does!
Here we are busy with our dissolving experiments:
Year 6 have visited Year 1 several times on Thursday afternoons, as part of their PSHE lessons. They have played games and listened to Year one reading, which has been very enjoyable for both year groups. As a final lesson Year 6 made Literacy games to share with Year 1. Great fun was had playing Space Race, Barn Race and Animals and their noises amongst others.
Year 6 made pizza in today’s science lesson and reflected on the science behind it. First we added yeast and warm water, kneaded the dough and left it to rise while we answered some quick fire revision questions on microbes and health, including why it is important to wash your hands really well with soap and warm water before kneading pizza dough!
Then we had a revision session on changing materials and why boiling oil is so much more dangerous than boiling water and that’s why no one was allowed near the pan of hot oil. By then it was hot enough at 160C to fry our mini pizzas. While they cooled we had another revision session on feeding and getting energy from food and how plants make all our food in the first place and where wheat, cheese and tomatoes come from. Then, of course, we ate the pizzas! Nice science lesson and well done everyone!
The dough before….
Jess kneading the dough..
Cooking the dough balls
The finished pizzas. Yum yum
Year six are learning about microbes and health. We investigated areas around the school, poking about with cotton buds and smearing deposits onto plates of agar jelly. We left one section of the agar untouched, so we could make proper comparisons and we learned that this is called a CONTROL experiment. We left the plates for a week, carefully sealed.
Here a some of our results! We found the most microbes on the bannister and the sink!
The green and furry circles are moulds (fungi) and the shiny round ones are colonies of bacteria. Our thanks to Mrs Musto taking the plates to her secondary school for autoclaving to destruction.l We don’t want any of these baddies to escape.
Now you wonder why we’re always on at you to wash your hands before lunch year 6!