Assessment Exercise:

STATION A. Measuring Wind Speed

a. Equipment

 

   1. Small, battery-operated fan

   2. Wind gauge

   3. Table marked with a letter-by-number grid

   4. Task cards with directions


b. Task

 

   1. Place the wind gauge at position D-4 on the grid.

   2. Place the fan at position G-6 facing the wind gauge.

   3. Turn the fan on to medium speed.

   4. Record the wind speed and direction in your laboratory notebook.


STATION B. Rolling Cylinders

a. Equipment

 

   1. Four small clear plastic cylinders—one filled with sand, one empty, one 1/4 filled with sand, and one 1/2 filled with sand

   2. Adjustable incline

   3. Strips of colored paper of various lengths

   4. Task cards with directions


b. Task 1

 

   1. Roll each cylinder down the incline.

   2. Describe the motion of the cylinders and their relation to each other.


c. Task 2

 

   1. Place the blue strip of paper at the bottom of the incline.

   2. Select one of the cylinders, and adjust the angle of the incline so that the cylinder consistently rolls just to the end of the blue strip.


STATION C. Comparing Weights

a. Equipment

 

   1. Balance

   2. Collections of objects in bags (Teachers select objects that have irregular shapes and are made of materials of different densities so that volume and mass are not correlated.)

   3. Task card with directions


b. Task

 

   1. Arrange the objects in one bag in order of their weights.

   2. Describe how you arranged the objects.


STATION D. Measuring Volumes

a. Equipment

 

   1. Graduated cylinder, calibrated in half cubic centimeters.

   2. Numbered stones of various colors, shapes, and sizes but small enough to fit into the cylinder.

   3. Several containers marked A, B, C, and D.

   4. Task cards with directions


b. Task 1

 

   1. Measure the volume of container A.

   2. Record your measurement in your laboratory notebook.


c. Task 2

 

   1. Measure the volume of the stone marked 1.

   2. Record your measurement in your laboratory notebook.



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