GCSE Science : Pollution from Human Activities (Mind Map)
More Mind maps are available in the download section of http://www.globalmatters.org/topics .Includes pdf versions of the mind maps. Also, the free resources are available on the TES website
GCSE/IGCSE Chemistry : Properties of Metals
The latest set of questions for the topic Properties of metals is now available at https://www.webschool.org.uk/propmetals