![](http://www.st-marks.islington.sch.uk/wp-content/uploads/2018/05/SAM_1176.jpg)
The children are particles of a solid. They are gathered in tightly, unable to move.
![](http://www.st-marks.islington.sch.uk/wp-content/uploads/2018/05/SAM_1177.jpg)
The children are now particles of a gas, they move freely.
![](http://www.st-marks.islington.sch.uk/wp-content/uploads/2018/05/SAM_1178.jpg)
Children are particles of a liquid, they have a little more room to move around.
![](http://www.st-marks.islington.sch.uk/wp-content/uploads/2018/05/SAM_1180.jpg)
Children identify states of matter by their particles.