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lesson plan

FOOD CHAINS, BALANCE OF NATURE

   Warming Up :         (5m)                                      

     open question)   What do living things need to)

survive?  Challenge the students to name one living thing

that doesn't need them.   People need these things, too.

    Presentation:            (25)

     a.  In groups, have students brainstorm possible food

chains.  Each chain should have at least four links

Brighter students can be challenged to add a pollutant step

in theirs.   ...  a sample worksheet page of food chains is

given in the About Woodsy Owl Teacher Guide packet

     b.  Each group puts together a food chain of their own.

Every member of the group draws a picture to represent their

part of the chain.

 

     c.  Once completed,  each group mixes up the chain

paperclips it together in mixed up order,  then hands it to

the next group beside them. Every group  has a "new" food

chain, and reassembles it into the correct order. " The   

owner group" can correct the finished order.

        Evaluation:

                                                                           What do you notice about these relationships?

    (interpretive question)       (3m) 

                                                                         

How could we account for the

fact that in some areas, the top of the food chain dies

the middle?  example: all the coyotes that normally eat

rabbits and mice disappear.

  (interpretive question)   (5m) 

Do any species on earth seem to have

 influencing on their food chain or environment ?

  (summary question)    (5m) 

                                                                               Could anyone suggest one word or phrase that tells about the relationship between ?plants, animals, and man 

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Refrence  :

http://www.vtaide.com/png/foodchains.htm

http://users.rcn.com/jkimball.ma.ultranet/BiologyPages/F/FoodChains.html

http://www.eagle.ca/~matink/themes/Biomes/foodweb.html

http://library.thinkquest.org/11353/food.htm