“…As regards research evidence, Seddon & Shubber (1985), in another experiment using monochrome diagrams, showed that 13-and 15-year old Bahraini students can be taught to improve their ability to visualise rotations, but the extent of their improvement was not so marked as that of 17-year olds. In contrast, Seddon & Shubber (1984), as well as Seddon, El Farra & Jusoh (1984) found that, when the monochrome diagrams were presented in a manner different from that of Seddon & Shubber (1985), they were completely unsuccessful in trying to teach Bahraini and English students respectively. However, as described previously, Seddon & Shubber (1984) did obtain successful results using coloured diagrams with 15-year old Bahraini students.…”