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place a teabag in a mug; boil some water; pour over teabag; wait until strong enough;

place a teabag in a mug; boil some water; pour over teabag; wait until strong enough; remove the teabag; add some milk and stir. what is this?. procedure maketea objects: mug, teabag, water, milk; actions: pour, put, boil, stir, drink; conditions: strong, cool; begin boil water;

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place a teabag in a mug; boil some water; pour over teabag; wait until strong enough;

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  1. place a teabag in a mug; • boil some water; • pour over teabag; • wait until strong enough; • remove the teabag; • add some milk and stir. what is this?

  2. procedure maketea objects: mug, teabag, water, milk; actions: pour, put, boil, stir, drink; conditions: strong, cool; begin boil water; put (teabag, mug); pour (water, mug); repeat [ ] until strong = TRUE put (teabag, NOT mug); pour (milk, mug); stir (mug); repeat [ ] until cool = TRUE end end procedure what is this?

  3. what is this?

  4. Algorithm is a metaphor Imagine making a cup of tea When pupils are first introduced to programming at whatever level, a popular example is “making a cup of tea”. It is an activity associated with combining components in a specific order, over a period of time and ends when a condition is set.

  5. The format of instruction could be considered to be a metaphor if it is “a whole set of alternative labels, a whole apparatus of organisation that takes over new territory” (Goodman, 1951) Goodman, N (1951) The Structure of Appearance Harvard University Press

  6. John WoollardSeptember 2003

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