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    In this activity, students use modelling clay to construct different shapes (sphere, cube, cylinder) and calculate surface area:volume ratios with the aim of trying to develop a more efficient shape.

    By the end of this activity, students should be able to:

    • understand the importance of the shape of catalysts when they are in the form of nanoparticles
    • explain what is meant by surface area
    • use mathematical formulae to calculate surface area:volume ratios
    • explain which shape is the most efficient.

    Download the Word file for:

    • introduction/background notes
    • what you need
    • what to do
    • discussion questions
    • extension idea
    • student handout.
      Published 29 May 2008, Updated 11 April 2014 Referencing Hub articles