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18 March 2004 1544 GMT
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| Here is something you can challenge your mates to do: can you step through a postcard? |
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|  | « Back to the beginning Steps 5 - 8:
 Your mates will be amazed at your ability to do magic! If you have any cool experiments you'd like to see on the website, then email us at norfolk@bbc.co.uk with 'KIDS' in the subject box. | |  | |
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