Choong,+Linda

Linda Choong

Students tend to memorise area formulas without a solid foundation or understanding of how these area formulas are derived. The activities in this lesson "Area Formulas" assist students with understanding area formulas through the manipulation of figures and making connections between the areas of two figures, thereby understanding the meaning behind all the variables of the area formulas.

I found students are also weak in concluding the area of oblique triangles. I created a interactive page showing the relationship of the base, height and area of the oblique triangle. I have included a smartboard notebook attachment to show some animation of the derivation of the area of kite. This lesson is also featured in the latest Nspire newsletter called "TI Nspiring Times" Spring 2011. Check it out, it is in color.