Dudeney's puzzle + lesson plan
- Ivan De Winne
Dudeney's famous haberdasher puzzle (1908) Cut an equilateral triangle into four pieces that can be arranged to form a square with the same area
Find a construction ! Download lesson plan Dudeney.pdf http://new-twinspace.etwinning.net/c/document_library/get_file?uuid=46edd6a1-2c82-4431-9301-fcf05cd88165&groupId=34128894 Looking forward to hear your comments and experiences in the classroom.