See BP919 for the version with links to pages on the OEBP instead of images of Bongard Problems.
Adjacent-numbered pages: BP1078 BP1079 BP1080 BP1081 BP1082  *  BP1084 BP1085 BP1086 BP1087 BP1088
teach, meta (see left/right), miniproblems, presentationinvariant
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Leo Crabbe