Students investigate different types of quadrilaterals and apply knowledge of triangles to classify, describe and prove their characteristics.

A. Students will define quadrilaterals, distinguish between examples and nonexamples
(Construct a concept, communication and comprehension)

B. Students investigate different types of quadrilaterals, and observe their properties.
They use deductive reasoning to prove their observations
(willingness to try, discover relationship)

C. Students will learn (
visual, auditory and kinesthetic learning) and be able to appropriately use the words:
quadrilateral, parallelogram, rectangle, rhombus, square, trapezoid, kite, and describe the differences between them.
(comprehension and communication)

D. Students will be able to visualize a Venn diagram of different classes of quadrilaterals.

E. Students use their understanding of the area of a rectangle to develop expressions for areas of: parallelogram, square, rhombus, trapeziod, and kite.
(discover the relationship, creative thinking)

F. Students recall the formulas for the areas of the different quadrilaterals.
(simple knowledge)

G. Given some information about a quadrilateral, students finds necessary data to calculate its area and perimeter.
(algorithmic skill)

H. Students use their knowledge to slove problems that involve applying theorems they have proved and formulas they have found.