Sunday 18 November 2012

COASTAL PROCESSES



This cake stemmed from a GCSE fieldwork adventure to the Dorset Coast. Thanks to the vision of my then HoD (and a bit of a long term planning/calendar nightmare) we took a group of our year 10 and 11 students to the coast for 3 days, before they had started the unit. We covered in 3 days what we might have arguably taken 6 weeks to teach in the classroom, and on our return the students took charge of the rest of the classes’ learning, based on their newly discovered knowledge and understanding.

In these first couple of years of teaching I have heard many arguments for and against the timing and objectives of fieldwork – to introduce, to consolidate, to bring to life, and in fact I have seen all of these done to good effect so I don’t really hold an opinion of whether one or other is “better”.  This particular trip was an example of quite literally teaching in the field. I thought it was great, the boys weren’t allowed to throw a stone into the sea until they had identified it or checked it for a fossil, and the girls could only take arty photos if they could label and annotate it on screen immediately afterwards. I enjoyed this very much, afterall, how easy is it in the classroom to understand that cliffs are millions of years old? Far better to see them right there in front of you and witness for yourself the evidence of their age, isn’t it? Anyway, I digress…where were we?

Method
This one involved branching out into a bit of geology… Experimenting with types of cake to represent types of rock. Hence I used not only the staple brownie recipe, but also a plain sponge recipe (I added a drop of milk to the usual recipe to make it slightly more gooey and pliable). 
·         One portion of sponge mix had blue food colouring added for the sea (the usual blue butter icing was applied over the top)
·         One portion had mixed peal added (to create a matrix rock)
·         One portion was layered in a loaf tin with the brownie to create the horizontal bedding seen on the coastline east of Bournemouth
·         Amaretto chocolate fingers (groynes)
·         Chocolate sprinkles (to show build-up of sediment on one side of groynes)
·         Crumbled layer-cake and pieces of crystallised ginger (landslip)

Application
Being aimed at GCSE students, this cake provides an ideal backdrop for practise exam questions. For example; Using the resource, describe and explain the processes affecting sediment movement on the coast (4) or Explain the management options available for coastal areas where erosion is taking place (6)

As before, it could be used at the centre of a discussion on what was learnt – in this case in the field. Students could use the cake to teach others about what they learnt, or as the basis for a particular case study. You could even branch out and ask “how might be measure the processes going on here?” if the cake is used prior to a fieldtrip. Maybe it could finally provide a fun way of involving students in the pre-trip risk assessment process?!

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