Ths is one of the best lessons I've seen!!
This link has been bookmarked by 3 people . It was first bookmarked on 24 Apr 2008, by Bert Hopkins.
-
21 Apr 09
-
24 Apr 08
-
Add Sticky Note
-
-
Add Sticky NoteQuestion 1: Are all quadrilaterals with congruent corresponding sides necessarily congruent?1
Students began by cutting a drinking straw into four pieces, threading the string through, and tying it off to form a quadrilateral. They quickly realized that they could “move” the angles, so nope, this is not true. Unexpected bonus: discussion of concave/convex.-
This is a great question. You should read more!!
-
-
Question 3: Are all triangles with corresponding sides congruent necessarily congruent?
Make the triangle with straws… conclusion, yep, this does guarantee congruent triangles as the angles are “locked”
-
-
16 Apr 08
Public Stiky Notes
Would you like to comment?
Join Diigo for a free account, or sign in if you are already a member.