posted by ant
6 years 10 months 4 weeks ago • 28 views • 3:32
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YouTube description: Teach children how to find the beautiful hidden colours in ink and use chromatography to solve mysteries. For info sheets and printable badges, click here: http://rigb.org/experimental/series-2/c... continue reading
posted by Aard Vark (oritteropo) 9 years 3 months 1 week ago • 276 views • 3:58- 1