They quickly assume this figure is a rectangle, so when I ask them to calculate its area, they compute an area of 65. This seems to "prove" that 64 (the area of the original square) is equal to 65 (the area of the rectangle formed form the dissected pieces of the square). Our investigation of the new "rectangle" (via similar triangles) illustrates that the reconstructed figure is not truly a rectangle. This activity reinforces the necessity of rigorous proof in mathematics and alerts students to the dangers of accepting visual evidence as proof. The culmination of this lesson is reading and discussing the article "Fibonacci Sequences and a Geometrical Paradox" (cf [15]) in which Horadam shows how the Fibonacci numbers can be used to describe the area that appears to be gained in rearranging the parts of the square to form a rectangle. Using Horadam's article as a guide, we again analyze our 5x13 rectangle rearranged from the 8x8 square (Fig. 1). We observe that the one unit gain in area can be described by the relationship 5x13- 82 = 1, a particular example of connecting three successive Fibonacci numbers (Fn;Fn+l,Fn+2) by the generalized formula FnFn+1 -F2n+l - (-1)"+1. We then examine the relationship by considering the two cases, discovering: 1) when n is odd (as in our Fig. 1), the gain of one unit is the result of the appearance within the rectangle of a small parallelogram of unit area; 2) when n is even, the loss of one unit occurs because the unit parallelogram overlaps the dissected pieces. This gives the students visual evidence of how the Fibonacci numbers can be used to explain their dissection experiment, and how the results of their experiment can be expanded to include other cases. It is again, for them, yet another experience of utility within mathematics—the use of one mathematical topic to explain or clarify another. Now the students, appreciating the use of Fibonacci numbers within mathematics, are ready to explore the many directions that Fibonacci numbers can inspire outside of mathematics —describing natural phenomena, determining outcomes of games, providing economic solutions for ecological problems, etc. (cf. List of Resources). Because the students were tuned in to the idea of connections, these discussions and activities were more meaningful than they had ever been in any previous classes I had taught.