Here's a sample Strategic Intervention Material (SIM) that you can use as a guide in making one of your own. If you're an educator, then this SIM will be of great help in your daily teaching. This brings out the fun in learning! :)

1. Strategic Intervention Material in BiologyStrategic Intervention Material in Biology
Philippine Normal University – MindanaoPhilippine Normal University – Mindanao
The National Center for Teacher EducationThe National Center for Teacher Education
ProsperidadProsperidad,, Agusan del SurAgusan del Sur
LITTLE CHITIN ARMORLITTLE CHITIN ARMOR
Subphylum CrustaceaSubphylum Crustacea
Submitted to:Submitted to:
Prof. rose d. arquionProf. rose d. arquion
Submitted by:Submitted by:
Rhea Teressa S. Suba-anRhea Teressa S. Suba-an

2. Welcome, buddy!Welcome, buddy!
Prepare to have yourPrepare to have your
brain tested.brain tested.

3. GUI DE CARDGUI DE CARD
By nearly any measure, the most successful animals on the planet are
the arthropods. They have conquered land, sea and air, and make up
over three-fourths of all currently known living and fossil organisms, or
over one million species in all. Since many arthropod species remain
undocumented or undiscovered, especially in tropical rain forests, the
true number of living arthropod species is probably in the tens of
millions.
Hi there, buddy!Hi there, buddy!
I am professor chen!I am professor chen!
I will be your guideI will be your guide
throughout this sim. Let’sthroughout this sim. Let’s
work together well.work together well.

4. GUI DE CARDGUI DE CARD
In this Strategic Intervention Material, you’ll be the professor’s brainIn this Strategic Intervention Material, you’ll be the professor’s brain
buddybuddy..
ObjectivesObjectives::
1.1. Determine the inherited characteristics of arthropodsDetermine the inherited characteristics of arthropods..
2.2. Identify the different classes under subphylum crustaceaIdentify the different classes under subphylum crustacea..
3.3. Provide examples representing the different classes underProvide examples representing the different classes under
subphylum crustaceasubphylum crustacea..
After going through this SIMAfter going through this SIM,, you are expected toyou are expected to::
Amazing, isn’t it? We’ll findAmazing, isn’t it? We’ll find
out more today so payout more today so pay
attention to me, little buddy.attention to me, little buddy.

5. INHERITED CHARACTERISTICS ofINHERITED CHARACTERISTICS of
ARTHROPODSARTHROPODS
1.1.Bilateral SymmetryBilateral Symmetry – body can be divided into– body can be divided into
two identicaltwo identical halveshalves
2.2.Segmented BodySegmented Body – with a series of repeating– with a series of repeating
body sectionsbody sections both internallyboth internally
and externallyand externally
3.3.Hard ExoskeletonHard Exoskeleton – composed of protein and– composed of protein and
chitin. Must moltchitin. Must molt
as they grow.as they grow.
4. Jointed Legs4. Jointed Legs – all arthropods (arthro =– all arthropods (arthro =
joint, pod = foot) havejoint, pod = foot) have jointedjointed
limbs. The limb can be controlled bylimbs. The limb can be controlled by
Act i vi t y car dAct i vi t y car d

6. Act i vi t y car dAct i vi t y car d
11
Directions: Identify the pictures representingDirections: Identify the pictures representing
the inherited characteristics of arthropods. Tellthe inherited characteristics of arthropods. Tell
whether bilateral symmetry, segmented body,whether bilateral symmetry, segmented body,
hard exoskeleton, jointed legs or many limbs.hard exoskeleton, jointed legs or many limbs.
In a scale of 1 –In a scale of 1 –
10, how would you10, how would you
rate the difficulty ofrate the difficulty of
the activity?the activity?

7. SUBPHYLUM CRUSTACEASUBPHYLUM CRUSTACEA
- Majority of marine arthropods- Majority of marine arthropods
- distinguished from other arthropods by theirdistinguished from other arthropods by their
possession ofpossession of
a pair of biramous (two-parted) limbsa pair of biramous (two-parted) limbs, and, and aa
nauplius larval stagenauplius larval stage..
Act i vi t y car dAct i vi t y car d
4 CLASSES UNDER SUBPHYLUM4 CLASSES UNDER SUBPHYLUM
CRUSTACEACRUSTACEA1.1. Class BranchiopodaClass Branchiopoda
2.2. Class OstracodaClass Ostracoda
3.3. Class CirrapediaClass Cirrapedia
4.4. Class MalacostracaClass Malacostraca

8. CLASS BRANCHIOPODACLASS BRANCHIOPODA
• From the Greek :From the Greek : branchia, gills, akin tobranchia, gills, akin to
bronchos, windpipebronchos, windpipe
:: pous, footpous, foot
• RoughlyRoughly 800 species800 species of the classof the class
•
• Aquatic animals that includeAquatic animals that include brine shrimp,brine shrimp,
fairy shrimp, tadpole shrimp, water fleas andfairy shrimp, tadpole shrimp, water fleas and
other small, chiefly freshwater formsother small, chiefly freshwater forms
Act i vi t y car dAct i vi t y car d
(brine shrimp, fairy shrimp, tadpole shrimp and water flea respectively)(brine shrimp, fairy shrimp, tadpole shrimp and water flea respectively)

9. Choose the tile(s)Choose the tile(s)
which has a picturewhich has a picture
of animal(s) fromof animal(s) from
classclass
branchiopoda.branchiopoda.
Write the numberWrite the number
of the tile andof the tile and
name the animal inname the animal in
the picture. Do thisthe picture. Do this
on a sheet ofon a sheet of
paper.paper.
Act i vi t y car dAct i vi t y car d
22
In a scale of 1 – 10,In a scale of 1 – 10,
how would you ratehow would you rate
the difficulty of thethe difficulty of the
activity?activity?

10. CLASS OSTRACODACLASS OSTRACODA
• The most complex organisms studied withinThe most complex organisms studied within
the field of micropaleontologythe field of micropaleontology
• Generally small, ranging in length fromGenerally small, ranging in length from 0.10.1
to 32 mmto 32 mm
• Found today inFound today in almost all aquaticalmost all aquatic
environmentsenvironments including hotincluding hot
springs, caves, within the water table, semi-springs, caves, within the water table, semi-
terrestrialterrestrial
environments, in both fresh and marineenvironments, in both fresh and marine
waterswaters
• Have theHave the most complete fossil record of anymost complete fossil record of any
of the crustaceanof the crustacean
Act i vi t y car dAct i vi t y car d
(Heterocypris incongruens) (Harbinia
micropapillosa)

11. CLASS CIRRAPEDIACLASS CIRRAPEDIA
• Latin forLatin for ‘curled foot’‘curled foot’
• Well-presented in the fossil record back toWell-presented in the fossil record back to
the Cambrian (500the Cambrian (500
million years ago)million years ago)
• Found in just about every marineFound in just about every marine
environment, from shallow andenvironment, from shallow and
tidal waters to deep sea abysstidal waters to deep sea abyss
• Water-foulers, attaching to ships and otherWater-foulers, attaching to ships and other
structures where they can cause damage.structures where they can cause damage.
Act i vi t y car dAct i vi t y car d
(Neolepas rapanuii) (Lepas)

12. Act i vi t y car dAct i vi t y car d
33
Arrange theArrange the
jumbled letters tojumbled letters to
form the wordsform the words
which correspondswhich corresponds
to the differentto the different
classes underclasses under
SubphylumSubphylum
Crustacea. WriteCrustacea. Write
your answer on ayour answer on a
sheet of paper.sheet of paper.
NICHOBARADONICHOBARADO
PP
TACROOSADTACROOSAD
AIEDCRARIPAIEDCRARIP
Clues:Clues:
Wind PipeWind Pipe
ComplexComplex
OrganismsOrganisms
Curled FootCurled Foot
In a scale of 1 – 10,In a scale of 1 – 10,
how would you ratehow would you rate
the difficulty of thethe difficulty of the
activity?activity?

13. CLASS MALACOSTRACACLASS MALACOSTRACA
• IncludesIncludes more than 20,000 speciesmore than 20,000 species, which is, which is
aboutabout 2/3 of all species in the Subphylum2/3 of all species in the Subphylum
CrustaceaCrustacea
• MeansMeans ‘soft shell’‘soft shell’ in Greekin Greek
• It contains theIt contains the Order Decapoda (crab,Order Decapoda (crab,
lobster, true shrimp, etc)lobster, true shrimp, etc)
which lay people recognize as crustaceanswhich lay people recognize as crustaceans
• It contains theIt contains the Order Isopoda (woodlice andOrder Isopoda (woodlice and
sowbugs)sowbugs) which is the onlywhich is the only land-basedland-based
crustaceanscrustaceans
• It is very hard to generalize about this classIt is very hard to generalize about this class
Act i vi t y car dAct i vi t y car d

14. Act i vi t y car dAct i vi t y car d
44
MALACOSTRACAMALACOSTRACA In not more than 3In not more than 3
sentences define/sentences define/
describe in yourdescribe in your
own words picturesown words pictures
that the greenthat the green
aliens are holding.aliens are holding.
Hint: They are allHint: They are all
underunder
Class Decapoda.Class Decapoda.
In a scale of 1 – 10,In a scale of 1 – 10,
how would you ratehow would you rate
the difficulty of thethe difficulty of the
activity?activity?

15. I am so amazed!I am so amazed!
You’re such a fast learner,You’re such a fast learner,
buddy! You have completed thebuddy! You have completed the
task easily. Now, let us see iftask easily. Now, let us see if
you have retained what youyou have retained what you
have learned from the previoushave learned from the previous
activities.activities.

16. Assessment car dAssessment car d
11
ARTHROPODARTHROPOD
OROR
NOT?NOT?
Direction: List all the animals below and the inheritedDirection: List all the animals below and the inherited
characteristics of arthropodscharacteristics of arthropods
in a table and make an arthropod checklist. Do thisin a table and make an arthropod checklist. Do this
on a sheet of paper.on a sheet of paper.

17. Assessment car dAssessment car d
22
Direction: Identify as to what class under SubphylumDirection: Identify as to what class under Subphylum
Crustacea the animals belong.Crustacea the animals belong.
Write your answer on a sheet of paper.Write your answer on a sheet of paper.
11
..
22
..
33
..
99
..
77
..
1010
..
88
..
66
..
55
..
44
..
1212
..
1111
..

18. Assessment car dAssessment car d
33
Direction: Choose the letter of the correct answer. Write yourDirection: Choose the letter of the correct answer. Write your
answers on aanswers on a
separate sheet of paper.separate sheet of paper.
1. All of the following belong to class malacostraca except1. All of the following belong to class malacostraca except
one. Which is it?one. Which is it?
a. Hermit craba. Hermit crab c. Lobsterc. Lobster
b. True shrimpb. True shrimp d. Barnacled. Barnacle
2. What class under Subphylum Crustacea are found in2. What class under Subphylum Crustacea are found in
almost all aquatic environments both fresh and marinealmost all aquatic environments both fresh and marine
water?water?
a. Class Branchiopodaa. Class Branchiopoda c. Classc. Class
CirrapediaCirrapedia
b. Class Ostracodab. Class Ostracoda d. Classd. Class
MalacostracaMalacostraca
3. How is crustacean distinguished from other arthropods?3. How is crustacean distinguished from other arthropods?
a. They have a pair of biramous limbs and a naupliusa. They have a pair of biramous limbs and a nauplius

19. Enr i chmentEnr i chment
car dcar d
Malacostracans have a powerful role in the community. Human
consume large amounts of decapods, and huge industries have
developed around the capture or farming and sale of shrimp, lobster
and crabs. There is also a large aquarium trade, supplying animals
both as pets and as food for fish and amphibians. Most
malacostracan parasite invade fishes ad crustaceans.
Malacostracans play such an important role in aquatic ecosystems
that their conservation is an important issue. Commercial over-
fishing may eventually put populations in danger.
Buddy, It’s time to enrichBuddy, It’s time to enrich
what you’ve learned todaywhat you’ve learned today
with the importance ofwith the importance of
crustaceans!crustaceans!

20. Enr i chmentEnr i chment
car dcar d
In a clean sheet of short bond paper, write an essay (at
least 200 words ) on how you are going to help in the
preservation of the Crustaceans. Discuss ways and
methods of how exploitation and over-fishing should be
stopped.
IT’s easy for you buddy.IT’s easy for you buddy.
Enjoy and write!Enjoy and write! 

21. ACTIVITY 1ACTIVITY 1
1.1.Hard ExoskeletonHard Exoskeleton
2.2.Many LimbsMany Limbs
3.3.BilateralBilateral
SymmetrySymmetry
4.4.Segmented BodySegmented Body
5.5.Jointed LegsJointed Legs
Answer s car dAnswer s car d
ACTIVITY 2ACTIVITY 2
Tile No. 2 – Fairy ShrimpTile No. 2 – Fairy Shrimp
Tile No. 5 – Brine ShrimpTile No. 5 – Brine Shrimp
Tile No. 6 – Water FleaTile No. 6 – Water Flea
Tile No. 9 – Tadpole ShrimpTile No. 9 – Tadpole Shrimp
ACTIVITY 3ACTIVITY 3
•
BRANCHIOPODBRANCHIOPOD
AA
•
ACTIVITY 4ACTIVITY 4
StudentsStudents
answersanswers
may vary.may vary.

22. ASSESSMENT 1ASSESSMENT 1
Answer s car dAnswer s car d
ASSESSMENT 2ASSESSMENT 2
1. Malacostraca1. Malacostraca
2. Branchiopoda2. Branchiopoda
3. Ostracoda3. Ostracoda
4. Malacostraca4. Malacostraca
5. Branchiopoda5. Branchiopoda
6. Malacostraca6. Malacostraca
7. Cirrapedia7. Cirrapedia
8. Malacostraca8. Malacostraca
9. Cirrapedia9. Cirrapedia
10. Ostracoda10. Ostracoda
11. Branchiopod11. Branchiopod
12. Malacostrac12. Malacostrac
ASSESSMENT 3ASSESSMENT 3
1. D 2. C1. D 2. C
3. A3. A

23. Ref er ence car dRef er ence car d
Understanding Evolution. 2015. University of CaliforniaUnderstanding Evolution. 2015. University of California
Museum of Paleontology. 22 August 2008Museum of Paleontology. 22 August 2008
http://evolution.berkeley.edu/http://evolution.berkeley.edu/
http://www.cals.ncsu.edu/course/ent425/text02/arhropohttp://www.cals.ncsu.edu/course/ent425/text02/arhropo
ds.htmlds.html
http://www.oceanicresearch.org/education/wonders/arthhttp://www.oceanicresearch.org/education/wonders/arth
ropods.htmlropods.html
http://www.earthlife.net/inverts/crustacea.htmlhttp://www.earthlife.net/inverts/crustacea.html
WE did it! It was fun learningWE did it! It was fun learning
with you today. See youwith you today. See you
some other time, buddy.some other time, buddy. 