Mystery at Fountain Gully: Teacher notes Read through the student sheet Mystery at Fountain Gully to identify the scenario and ascertain what students are asked to do. Students are role playing the part of researchers. They are to find data for an investigator to compare findings, and propose methods by which elements samples may be identified. Students may find interactive periodic tables on the internet (such as the one on the website WebElements) useful for identifying these properties. Elements on which students need to research physical or chemical properties that would allow identification: Element Magnetic Conductivity Burns in air Density Colour Mg Si Fe Al S Students complete Task A on the student sheet Mystery at Fountain Gully and then, in class discussion, reflect on their findings. Then they complete Task B on the student sheet. By doing this students explore some of the properties that differentiate between elements with an emphasis on those properties for which they can suggest a test. Use of the periodic table is encouraged, as is the use of available reference works such as density tables. Internet searches may also be used. Explain that information that is researched in these ways can be called ‘second-hand data’. Teachers may choose to use images from the internet to illustrate the elements involved in this scenario. The corresponding lesson plan lists some examples. 1 of 1 Sci_Y09_U3_TN_MysteryFountainGully
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