Question

design a process of teaching using constructivist approach for the following problems:
2 gift boxes are with ribbon( cube and cylinder). Box a is a cube of side-length 10cm.Box b is a cylinder with height end diameter 10cm each. How would you teach your students to answer the question which box needs the longer ribbon?

Answer 1

the box having more surface area will require longer ribbon.
so we have to find out the surface area of both boxes.
surface area of a cube is 6*l^2 (where l=side lenght)
=6*10*10
=600
surface area of a cylinder is (area of bases +area of curved surface)
= 2*(pi)*r^2+2*(pi)*r*l
=2*3.14*10*10 +2*3.14*10*10
=1256
so the cyllinder has more surface area & need longer ribbon.

Answer 2

tq for ur answer. bt hwto teach students abt it?