This activity also involves
using precise mathematical language to one another through the
use of words, gestures, or drawings.
Students will use paper, pencil, and rulers.
Students sit opposite one another,
separated from view by a screen. One student designs a simple
set of shapes as the other students calls out various mathematical
terms.
Using Clairswork MacPaint or GSP, students compile similar sets of objects and/or shapes. They may print them or work directly on the screen. The teacher or a partner calls out verbal descriptors as one student draws.
For example: "Draw a rectangle in landscape orientation in
which its longest sides are about as twice as long as its shortest.
Bisect the rectangle from top left to bottom right corners with
a straight line of the same thickness as the rectangle. Bisect
rectangle from top right to midpoint of the previous bisecting
line. Draw a ellipse in the bottom left corner."
1. Consider more complex sets of shapes
2. Use color and variations of line thickness