`Wonderful YouJanet Elkins                   Douglass Middle Math & Science Academy                               543 N. Waller                               Chicago IL  60644                               (312) 534-6176Objectives:Middle grades through 8th1.  Practice with linear metric measurement2.  Appreciation of differences/acceptance of diversityMaterials Needed:2-meter stick    several 1-meter sticks          flexible metric tape linespaper/pencil     calculator                      3 X 5 cardsStrategy:1.  Have students guess if they are rectangles or squares if one compared the individual's height with the measurement of fingertip to fingertip of the outstretched arms.  Mount a 2-meter stick along a free area for taller students.  Group will take each others measurements, and determine if the guesses were correct.  Take hand count of those who were surprised by the outcome.2.  Task is to determine the PERCENT or PROPORTION that the legs are of the total height per student.  The "nice" way to take this measurement is to have the person being measured hold a 1-meter stick horizontally AT the top of the legs.  Partner will then measure from the floor with another meter stick.  Height is already known.  Percent is found by dividing the leg length BY the height, then TIMES 100.  EXAMPLE: legs 84 cm divided by height of 200 cm = 42%Write the percent legs you are on your 3 X 5 card.  Students will arrange themselves in an increasing or decreasing line by the legs proportion.  OBSERVE the differing heights all along the line. Reassemble with height beingthe determining factor.  Observe differing leg proportion with students on each side of you. Performance Assessment:1.  Teacher observation2.  Student "a-ha" at diversity of leg proportion vs. height accompanied by     verbalization or written group report.3.  Students repeat activity with the HEAD height being the proportional factor.Extensions:There are some proportions that are different during our lifetimes.  Ask students if a baby's legs would be the same proportion as ours.  (No)  Ask when leg growth spurt PROBABLY starts.  (Teens) * The diameter of the fist is approximately the length of a foot.  (Useful to know when you are buying socks and don't want to take off your shoes!)  * Twice to three times the circumference is approximately your height.  * The measurement between your wrist and your elbow is also approximately your foot length.  (Fool others by asking for the wrist to elbow length, then say that you can "guess" who has the biggest or smallest feet.`