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The materials on this site are no longer being updated. For Practical Action's main school site go to www.practicalaction.org/schools




1 - ecofashion
2 - yoghurt
3 - plastics
4 - playpumps
5 - organiccotton
6 - windpower
7 - maasai
8 - organicbaby
9 - soap
10 - sheabutter

Glossary

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warp thread a thread stretched lengthwise in a loom 
wean to begin feeding a baby solid foods, as well as milk 
weft thread a thread woven across a warp to make fabric 
welding joining two pieces of metal or plastic by heating the joint so that the pieces fuse, or by applying pressure so that the pieces forge 
wholesaler someone who buys goods in large quantities and then sells them on to other traders for sale to the public 
World Bank a multinational development agency formed to provide loans and technical assistance to the poorer countries of the world. It provides almost US$16 billion in loans annually, making it the world's largest source of development assistance 
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Practical Action - Technology challenging povertyEuropean Commission - Department for International Development

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