Filtration | Developing understanding | 11–14 years

Developing understanding is a series of resources that encourages learners to connect their thinking at the macroscopic, sub-microscopic and symbolic levels. This resource aims to develop learners’ understanding of filtration. The questions encourage learners to think about he relative size of the holes in filter paper compared with visible small pieces of undissolved material and invisible particles. As a result, learners should develop more secure mental models to support their thinking about this topic.