Dudeney's dissection puzzle lesson plan
You can download a step by step lesson plan on this topic for your students (age 14 -18)
[url]http://new-twinspace.etwinning.net/c/document_library/get_file?uuid=46edd6a1-2c82-4431-9301-fcf05cd88165&groupId=34128894[/url]
Looking forward to hear your comments and experiences
Ivan De Winne