Do you know which materials will dissolve in water? Why not try this experiment at home with items you find in your kitchen cupboards.
We made predictions about a variety of solid materials and then tested them in room temperature water.
On Friday, Year 5 designed our own experiments to discover what would happen to a gingerbread man if he fell into a river! We discussed the variables and how to ensure the tests we conducted would be fair.
The gingerbread man seemed quite happy about the experience!
This week, we started our science work by developing our skills in observing over time. We measured carefully and observed gummy bears in different liquids after 3 hours, 24 hours and 48 hours.
We used water, salt water, sprite and vinegar. Our liquids were all at room temperature. After 24 hours the gummy bears looked like this.
Can you work out which liquid the gummy bears have been in? How do you know?
In FS1 we have been looking at the importance of washing our hands. We used bread to show how germs spread. Mrs North put on rubber gloves and placed a piece of fresh bread in the plastic wallet. She then washed her hands with hand sanitizer before touching another piece of bread. All the class touched a piece of bread and finally Mrs North washed her hands with soap and water. Below are some photos of what we did and the findings from our experiment.
All the class touched a piece of bread.
Mrs North washed her hands with soap and water before touching some bread.
Today, year 4 have been learning all about the human digestive system. We recreated the different stages of the digestive system practically.
First, we placed the food (a banana and a biscuit) and the saliva (a small amount of water) into a clear food bag where we “chewed” it together. Next, we swapped food bags with our partner to represent the food’s journey from our mouth to our stomach through the oesophagus tube. Then, we added a small amount of orange juice which acted as our stomach acid. After breaking the food up further, we moved the mixture from the clear food bag into the “small intestine” (tights). We then squeezed any excess liquid out, symbolizing how nutrients and minerals are absorbed in the small intestine. Next, we moved the remaining food through the tights until it reached the toe. Finally, we cut a small hole in the toe of the tights and squeezed until our fake stool was released!
For science week, Year 4 are investigating the effect that different liquids have on our teeth. To do this, we are using egg shells to represent the teeth and placing these in plastic cups filled with 6 different liquids (coke, lucozade, vinegar, water, water with sugar and blackcurrant juice.) We will then closely observe and compare the eggs at the end of the week! Before carrying out our experiment, we considered how we could make sure that it would be a fair test and also wrote down our own predictions about what would happen. Results to follow on Friday!