Revision as of 07:21, 21 August 2008

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Outcomes

Pupils can explain how a sundial is used to measure time
Pupils understand the concept of reaction time, the factors that affect it and can recall one way of measuring reaction time

Display images of different sundials, progressing through time; Show time-lapse video of sundial, an examples can be found here, here, here and here

To guide the lesson, there is a power point presentation
Make sundials; templates need to be printed onto card, a selection of templates can be found for inclined, moreinclined, equatorial, polar, cycloid polar, cross, equitorial, universal ring
Make and use reaction timers; high ability worksheet and low ability, you may wish them to test their reaction time using a fake 'fiver'
Discuss factors affecting reaction time

Continue Alien Planet project; focus on timekeeping (e.g. how do you tell the time with a sundial if there are three suns?).

to use some of the sundials you will require the latitude, you can find this at this not so nice web site or just stand outside and use a GPS.
excellent sundial website with all resources can be found at

Craft equipment, particularly any knives or scissors, please see the risk assessment about using Knives and sharp objects

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 *	Make sundials; templates need to be printed onto card, a selection of templates can be found for ''[http://www.youtube.com/watch?v=abog6ys7tDY&feature=related inclined]'', ''[http://cp.c-ij.com/english/3D-papercraft/science/download/sundial_e_a4.pdf moreinclined]'', ''[http://www.mysundial.ca/files/Equatorial_Sundial_Kit_Small.pdf equatorial]'', ''[http://www.mysundial.ca/files/Polar_Sundial_Kit_NH.pdf polar]'', ''[http://www.mysundial.ca/files/Cycloid_Polar_Sundial_Kit_NH.pdf cycloid polar]'', ''[http://www.mysundial.ca/files/Cross_Sundial_Kit_NH.pdf cross]'', ''[http://www.mysundial.ca/files/Equatorial_Ring_Sundial_Kit_NH.pdf equitorial]'', ''[http://www.mysundial.ca/files/Universal_Ring_Sundial_Kit_String_NH.pdf universal ring]''
 *	Make and use reaction timers; [[Media:Reaction_timer_worksheet.doc| high ability worksheet]] and [[Media:Reaction_timer_worksheet_low_ability.doc| low ability]], you may wish them to test their reaction time using a fake '[[Media:Fivepound.jpg|fiver]]'
-*	Investigate factors affecting reaction time
+*	Discuss factors affecting reaction time
 ==Plenary==