Unit One Introduction to Marine Invertebrates - the National Sea ...

with scales (scale worms) ;
some live in calcareous or
parchment-like tubes (tube
worms) ; and others live in
cones made of cemented sand
grains. Annelids can be
found in vertually every type
of marine habitat (as well as
in fresh water and on land).
Some form part of the zooplankton)
some burrow in
mud, others live under rocks
or shells, and there are even
some living in sediments of
the deep sea.
Vocabulary:
flatworm
ribbon worm
spoon worm
0 peanut worm
segmented worm
Materials:
pictures of worms from books
or magazines
chalkboard or butcher paper
chalk or magic markers
worksheets
. . . Worms (2-H)
. . . _--
Worm by Letter (2-I)
. . . ~~
Tube Worms (2-J)
Procedure:
1. Show students pictures of
worms from books and magazines,
or from the worksheets.
Discuss the way that
worms eat and are eaten, and
the role they play in loosen-
18
ing beach sands and muds.
Distribute the worksheets
-Worms, Worm by Letter, and
~___
Tube Worms. -
Additional activities:
1.
2.
Art, Math : Have students
cut worm shapes out of
construction paper. Write
math problems on one side of
the cutouts and the answers
on the other side.
Science : To help students
get over any squeamishness
about worms, bring some live
ones into the classroom in a
container of sand or mud.
Ask students some of the
following questions :
How long is the worm?
What color is it?
Does its body have segments
(rings)?
How fancy or plain is its
head? (Use a magnifying
glass. Worms that crawl over
the surface and hunt actively
usually have well-developed
sensory apparatus on their
heads, Look at the tentacles
on the heads of the tube
worms. )
How many legs does it have?
Does it move fast or slow?
Will it stay in your hand
when you hold it?
How quickly can the worm
bury itself?
Return the worms to the
beach when you are finished
watching them.