TI Connect™TI Connect™ CE
Published on April 10, 2011
Given a set of shapes whose combined areas represent the left-hand expression, students manipulate them to create rectangles whose areas are equal to the right-hand expression.
In Problem 1, students factor a perfect square trinomial. They find the areas of each of the four figures and arrange the figures to form a square.
Make sure all student calculators have Cabri™ Jr. installed.
In Problem 2, students prove the rule for factoring a difference of squares. Students will manipulate the squares to show removing the smaller from the larger.
Students next transform the L-shape that remains into a long rectangle with the same area. They then compare the areas.