Does anyone know why the formula and diagram were changed?
On Jan 21, 2010, at 2:32 PM, Westendorf, Neal wrote:
> I have taught this using a web or, better yet, a cardboard prism > that can be laid out flat so they see the triangles and rectangles. > I would also show them the diagram and recommend putting ?p? on the > same end as ?s? and ?w?. I have also skipped the two ends canceling > the ½s for each triangle base. Instead, I use two triangles and > three rectangles. Surface area can be very difficult for students > to visualize. Card board manipulatives really help with this concept. > > Neal Westendorf, Taconic Hills > > From: firstname.lastname@example.org [mailto:email@example.com > ] On Behalf Of firstname.lastname@example.org > Sent: Thursday, January 21, 2010 10:45 AM > To: email@example.com > Subject: Gr 7 Reference Sheet > > Any teachers talking about the Right Triangular Prism diagram on the > NYS Gr 7 reference sheet? http://www.emsc.nysed.gov/osa/eliinfogen/7mathref-2010.pdf > > Barb Amedro > Oswego County BOCES