tag:blogger.com,1999:blog-8256492698354362046.post6485747870524299708..comments2021-08-31T01:17:09.053+10:00Comments on Authentic Inquiry Maths: The Difference Between Area and PerimetreBruce Ferringtonhttp://www.blogger.com/profile/07947474361978469990noreply@blogger.comBlogger3125tag:blogger.com,1999:blog-8256492698354362046.post-9622768060411975962012-09-17T02:09:51.091+10:002012-09-17T02:09:51.091+10:00Someone else this week posted on a similar topic a...Someone else this week posted on a similar topic about introducing concepts at different times. I agree with you that they should not be introduced at the same time as that leads to confusion. Thanks for sharing your student insights!druinhttps://www.blogger.com/profile/12363634340959613461noreply@blogger.comtag:blogger.com,1999:blog-8256492698354362046.post-69602298919324874852012-09-11T09:20:00.342+10:002012-09-11T09:20:00.342+10:00So we considered a shape with really thick edges f...So we considered a shape with really thick edges for homework and decided (eventually):<br />1. the perimeter isn't part of the shape<br />2. the perimeter has no thickness<br />...so the thickness of the border doesn't matter - you measure the inside of the thick line to get the perimeter (some kids did take some convincing)<br />BUT in the real world (not the world of 2D shapes) we can measure the outside of the line - like in a house where the area of the house includes the thickness of the walls.<br />An interesting conversation!Bruce Ferringtonhttps://www.blogger.com/profile/07947474361978469990noreply@blogger.comtag:blogger.com,1999:blog-8256492698354362046.post-42928474714562918642012-09-10T14:35:41.013+10:002012-09-10T14:35:41.013+10:00Now give them this; find the perimeter and area of...Now give them this; find the perimeter and area of a rectangle with very thick lines. Where does the area stop and the perimeter begin?Dwyerteacherhttp://www.teachingparadox.edublogs.orgnoreply@blogger.com