Wonderful Worms 

Judith Lessin                  Rogers Elementary School
2644 W. Harrison               7345 N. Washtenaw Avenue
Glenview IL 60025              Chicago IL 60645
(708)724-6824                  (312)534-2125

Objectives:

     Primary children will be able to:
          identify living and non-living things.
          understand the importance of earthworms to the soil.
          name some basic facts about earthworms.
          recognize basic "worm" vocabulary words.
          demonstrate vermicomposting techniques.
          understand that different living things need different environments 
            for living. 

Materials Needed:

     Earthworms               Shop Towels                  Gummy Worms
     Water                    Paper Plates                 Knifes
     Containers               Scissors                     Top Soil
     Sand                     Hardboiled Eggs              Acetone
     Tape Recorder            Rap Tape                     Worksheets
     Microphone               Magnifier                    Ruler
     
Optional Materials Needed:

     Balance Scale            Terrarium                    Books
     Flashlight               Prism                        Food Processor
     Socks                    Markers                      Transfers

Strategy:

     1.  Distribute Gummy Worms.  Discuss living vs. non-living things.  Access 
         children's prior knowledge of worms through discussion.
     2.  Distribute worms, one wet and one dry paper towel, and the following 
         worksheets: (a) Worm Watching Guide (b) Worm Words (c) Worm Diagram.
     3.  Discuss the following: (a) Is your worm a living thing?  How do you  
         know?  (b) What shape is your earthworm?  (c) What color is your 
         earthworm?  (d) How long is your earthworm?  (e) Does your earth worm 
         have legs, eyes, ears, nose, hair, mouth?  (f) Is there a difference 
         between the top side of your earthworm and underneath?  Can you 
         describe the difference?  (g) How does the worm's skin feel?  (h) Do 
         you think the earthworm has a skeleton?  (i) How does the worm move?  
         (j) Can a worm move backwards?  (k) Does a worm have any special 
         features?  Describe them.  (l) Does a worm prefer a wet or dry paper 
         towel? 
     4.  Referring to their diagrams, have the students identify where the 
         following features are on or in their worms:  (a) clitellum;
         (b) gizzard; (c) crop; (d) anus; (e) mouth; (f) hearts; (g) segments.
     5.  As background information, for the adults who may be teaching this unit 
         to their students, discuss reproduction in a worm.
     6.  Distribute sheet "Wormy Activities In the Classroom".  Discuss the 
         activities described below.
              a.  Write and illustrate a story from a Worm's perspective.
              b.  Weigh lunch leftovers for your class after they have been 
                  chopped up by a food processor.  Find out how many kilograms 
                  of waste your class produces in a day, week, month, and year.  
                  Feed chopped up waste to your worms. 
              c.  Share class knowledge with others by writing a newsletter.
              d.  Make a Worm Puppet from an old sock.
              e.  Have students make "Worms and Dirt".  Crumble chocolate wafer 
                  cookies and make instant chocolate pudding.  Place gelatin 
                  worms in the bottom of dessert cups, pour pudding over the 
                  top, and then sprinkle the crumbled cookies over.
              f.  Make Tee Shirt Transfers or Buttons which proclaim "Worms Eat 
                  Our Garbage".
              g.  Incorporate descriptive words about worms into creative 
                  writing assignments.
              h.  Research the giant Australian Earthworms.
              i.  Shine a flashlight through a prism so that it casts a 
                  spectrum.  The worm will crawl through a red light and avoid 
                  blue light. 
     7.  Wet a cotton ball with nail polish remover.  Put the cotton ball by a 
         worm's head.  Then put the cotton ball by a worm's tail.  Note any 
         difference in the response.
     8.  Distribute containers.  Make a vermicomposter with sand, top soil, and 
         food waste.  Put worms in containers.  Feed worms and water soil on a 
         regular basis.  Observe over time.
     9.  Play the audio tape "Worm Rap".  Have students do the "Worm Rap".
         The "Worm Rap", written by Caroline Haviland, can be found in the 
         publication, SCIENCE AND CHILDREN, JANUARY 1993. 

                               WORM RAP

                      A worm doesn't have any bones inside,
                   But that doesn't stop it from taking a ride.
                    Through the soil, Yeah, a worm is strong.
                  If it had to, it could carry 10 others along.

                     No bones, no bones, no bones, no bones
                        A worm has got no bones, no bones

                      A worm doesn't have any eyes to see,
                 But that doesn't mean it will bump into a tree.
                    It feels vibrations, deep in the ground,
                 And then it starts to move and wriggle around.

                       No eyes, no eyes, no eyes, no eyes,
                        A worm has got no eyes, no eyes.

                     A worm doesn't have any feet you know,
                  But that doesn't stop it from making a hole.
                   Deep in the soil when the rain comes down, 
                   The worms will come out or they will drown.
 
                       No feet, no feet, no feet, no feet
                         A worm has got no feet, no feet
 
                     A worm doesn't have any teeth to chew,
                   But that doesn't stop it from eating food. 
                  They take little bits of dirt in their mouth, 
                  And when it's all eaten, rich soil comes out!

                     No teeth, no teeth, no teeth, no teeth,
                       A worm has got no teeth, no teeth.

                      No bones, no eyes, no feet, no teeth!
                  A worm has got no bones, eyes, feet, or teeth! 


Performance Assessment:

     At the conclusion of this mini-teach unit on worms, students will be able 
to identify living and non-living things, understand the importance of 
earthworms to the soil, name some basic facts about earthworms, recognize basic 
"worm" vocabulary words, demonstrate vermicomposting techniques, and understand 
that different living things need different environments for living.  Different 
assessment techniques will be used including teacher observation, oral 
questioning, written tests and worksheets, crayon drawings, and drama 
presentations with sock worm puppets. 
 

Return to Biology Index