Have a go at labelling some materials at:
http://www.crickweb.co.uk/ks1science.html
Take a look at 'Which materials do we use?/ over at BBC Bitesize:
https://www.bbc.co.uk/bitesize/topics/zrssgk7/articles/z9pgcdm
And learn about the properties of materials as you experiment with a variety of objects in this great activity for children:
https://www.sciencekids.co.nz/gamesactivities/materialproperties.html