http://nsdl.exploratorium.edu/nsdl/ Exhibit-Based Science Learning and Teaching Digital Library EN http://blogs.law.harvard.edu/tech/rss sherryh@exploratorium.edu ronh@exploratorium.edu Sat, 21 Nov 2009 16:55:57 PST http://nsdl.exploratorium.edu/nsdl/showRecord.do?id=14599 With a paper towel, a black marker, and a cup of water, discover the secret colors hidden in black ink. This activity explores capillary action--how water moves up paper--and chromatography--how different elements of the ink are carried along at different rates, allowing you to see that black ink is actually made up of many different colors. http://nsdl.exploratorium.edu/nsdl/showRecord.do?id=14599 Mon, 12 Oct 2009 07:29:39 PDT http://nsdl.exploratorium.edu/nsdl/showRecord.do?id=14600 Make your own simple speaker so you can listen to your favorite radio station. Just wind a coil, attach it to a cup, hold a magnet nearby, and listen. This activity explores electromagnetism and teaches about the way sound moves, from a singer's vocal cords, though radio waves, and all the way to a listener's ear. http://nsdl.exploratorium.edu/nsdl/showRecord.do?id=14600 Mon, 12 Oct 2009 05:56:44 PDT http://nsdl.exploratorium.edu/nsdl/showRecord.do?id=14601 This activity explores the nature of inquiry itself by asking learners to observe frozen balls of ice, turn their observations into questions, then choose an ‘investigable’ question to explore further. A facilitator’s guide and an inquiry concept map are provided, enhancing this activity and also giving educators ideas about how to bring inquiry-based methods to other activities. http://nsdl.exploratorium.edu/nsdl/showRecord.do?id=14601 Mon, 12 Oct 2009 05:55:15 PDT