Feb. 9, 2018
Semi – Detailed Lesson Plan in Science Grade 8
I.
II.
Target
At the end of 60 minutes 80 % of the students are expected to get 85 % level of proficiency in the
following:
1. Identify the general characteristics of Arthropods
2. Compare the five classes of Arthropods in terms of:
a.Main Body region
b. Pairs of legs
c. Pairs of Antenna
d. Presence Wings
e. Example of organism in each class of Arthropods
3. Cite the importance of arthropods in the ecosystem
Learning Task
A. Topic: Biodiversity
Subtopic: Kingdom Animalia: Phylum Arthropods
References:
Science Learner’s Material Grade 8 pp. 225
B. Materials
Teacher
Table about the characteristics of each classes
under Phylum Arthropoda
Picture of animals under Phylum Arthropoda
Powerpoint presentation about Phylum
Arthropoda
C.
Skills
Identifying
Comparing
Citing importance
D. Values
Patience in doing and answering the activity
Cooperation within the group
E. Concept
Student
White cartolina
Marker
Manila paper
Picture of Arthropods
Pencil color/ crayon
Phylum Arthropoda is the largest group of the animal kingdom, surpasses all others both in
number and ecological diversity of organisms. They are mostly terrestrial but few are aquatic forms. They
have jointed appendages with variable function. Exoskeleton is made up of chitinous cuticle that is shed at
intervals. Many crustaceans, especially crabs, lobster, shrimp, prawns and and crayfish are sources for
humans. Tick, centipedes and millipedes are decomposers, meaning they break down dead plants and
animals and turn them into soil nutrients.
Class
Main Body
Pairs of legs
Pairs of
Presence
Examples
region
Antenna
Wings
Crustacea
Two
Five or more
Two
Absent
Crayfish
Cephalothorax
and abdomen
Chilopoda
Two head and
One pair of leg One
Absent
Centipedes
trunk
Diplopoda
Two
Two pair of
One
Absent
Millipedes
leger body
segment
Insecta
Three head,
Three
One
Usually
Butterfly,
thorax and
present
Dragonfly
abdomen
Arachnida
Two
Four
None
Absent
Tarantula
cephalothorax
and abdomen
III.
Strategies ( Differentiated Instruction ) ( Cooperative Learning )
A. Pre – Activity
1. Daily routine
2. Recall of the lesson about Phylum Chordata
3. Motivation
The teacher will introduce the memory game to the students. Ask students to choose two
numbers on the board where they guess have similar organism. If the student picked wrong pair
of numbers call another student and let him/ her choose two numbers again until they get pair of
organisms. Ask the students to identify the characteristics common to all the organisms shown in
the memory game.
B. Activity Proper
Ask students to group themselves according to their skills.
Each group assigned in different task and classes of phylum arthropda. The following
are the task to be perform by each group.
a. Slogan Making
Make a slogan about the characteristics of organisms under Class Arachnida
b. Picture Parade
.Present different pictures of animal under Class Crustacea
c. Poem Making
Construct a poem about the characteristics of Centipedes
d. Poster Making
C.
Make a poster about the characteristics of organisms under class Diplopoda
e. Jingle Making
Make a jingle about the characteristics of organisms under class Insecta
2. Explain the rubric for evaluating their presentations.
Post – Activity
1. Let each group present their output on the assigned task
2. Using PowerPoint presentation, discuss with the students the differences in each
class of arthropods in terms of:
a. Body region
b. Number of legs
c. Number of antenna
d. Presence of wings
D. Valuing /Application
1. Ask student to give some importance of Arthropods in the ecosystem
IV.
V.
Evaluation
Direction: Fill in the table
Class
Main Body
region
Crustacea
Chilopoda
Diplopoda
Insecta
Arachnida
Pairs of legs
Pairs of
Antenna
Presence
Wings
Examples
Agreement
1.
2.
3.
What phylum is most closely related to phylum Arthropoda?
How does the arrangement of gills in the crustacean differ from the arrangement of gills
in fish?
Read about the concept on interaction on page 230 Science Learner’s Module Grade 8
and answer the following question.
a. What is a food chain?