8 STEM last lesson of design stage

Students made their version of a solar bottle light http://www.instructables.com/id/How-to-build-a-SOLAR-BOTTLE-BULB/ We looked at the website, then students designed their own and tested it outside. Took one lesson in total.Was interesting to see the variation in designs.Students greatly enjoyed this activity. Will go over the science of this briefly next lesson http://physicsbuzz.physicscentral.com/2011/09/solar-bottle-superhero.html  and http://www.scienceinschool.org/2014/issue29/solar_bulb Also of interest http://www.scientiareview.org/pdfs/226.pdf  And here is the night time version http://www.independent.co.uk/life-style/gadgets-and-tech/features/liter-of-lights-solar-powered-diy-lamp-made-from-a-plastic-bottle-is-transforming-lives-9993728.html

There are also some images below of revising scale with hands-on grid paper activity. Good quick video http://splash.abc.net.au/home#!/media/1504070/it-s-all-a-matter-of-scale