This week, in Year 5, in Science we worked scientifically and we made water filters in our topic: Mixtures and Separation. We cut the top off a water bottle and using an elastic band, attached a piece of gauze where the lid was to stop the materials falling out of the bottom as we constructed our filter. Then, we chose 5 materials to layer up in our filter. We could choose from sand, cotton wool, lentils, rice, pasta, dog biscuits and toy stuffing. We found that when the muddy water was poured through, the large bits got stuck in the big gaps and the tiny gaps in between the sand trapped the tiny pieces of dirt. The water that came out was much cleaner that before but not drinkable. We worked well in our groups and had some great scientific discussions!