During Science, our topic is Properties and Changes of Materials. Last week, we planned an investigation to help the Brilliant Bags Company find the best thermal insulator for a lunch box. This week, we have carried out the investigation to find the best material. After recording the results at regular intervals (temperature and ml of ice that had melted) we created a table of all the results and created a line graph to show the data over a period of time. We were very interested in the results as the winning material changed throughout the amount of time. The best material in Miss Blyth’s class was aluminum foil and in Miss Hailey’s class it was polystyrene. The worst thermal insulator, in both classes, was paper. We will now be writing a letter back to the Brilliant Bags Company to explain all about our investigation and our findings.