Trivial one really. Teaching light to upper primary (light in straight path, changing height of shadows with the position of light and object, effect of lenses and prisms etc), but suspect that the same issue arises in secondary.
To work well, these experiments need reasonably bright torches, quite small, with a single point light source. So many 'educational' torches are now LED ones, with multiple LEDs that make these experiments really hard to do accurately. We had some nice little cuboid torches, size of a couple of AA batteries, that were brilliant, but have come to the end of their lives.
Anyone out there found the perfect solution, quite cheaply? Or am I going to have to do lots of complicated things with 'masks' / slits for LED torches?
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Question for science teachers....
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teacherwith2kids · 28/01/2016 11:59
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