This week we had Mrs Bebleman back to help us understand fair testing and learn about variables.  This will help us when we start looking at doing some testing of our own.

After learning about variable and testing we did an experiment with rolling a car down different height levels – We needed to learn to time things and we also learned that we each have different reaction times so you need to do tests more than once and then work out an average and try not to change anything.

 

We looked at checking the instruments we use are giving a reliable result. This is called calibration. We checked the weight of 1/2 cup of water – you had to be really careful to have it on the line and then you still got variations from the different measures on different cups.

After doing this we went for a walk to look at our community water solutions for our stormwater – we walked along to see how it came from our school down to the first stream and then into ponds. It then moves again through piping into the Puhinui Steam which is the beginning of our water heading for the sea. It has to go through the different levels to stop the water flooding in heavy rain and to stop erosion. It also helps to remove any pollutants that might have been introduced.