[dxbydt]

personally, I feel uncomfortable reading stuff like "If the width is 2 units and the height is 2 units, the area is 4 square units since 2 times 2 is 4". 2 plus 2 is 4 as well, yeah ? As also, 2 ^ 2 = 4 The area is 4 regardless of what 2 times 2 is, or 2 plus 2 is, or 2 raised to 2. I get your intent, but the phrasing is questionable pedagogy at best.

[hsparikh]

Definitely agree with you, and the phrasing will change as we improve the design of these pages. Thanks for the feedback!