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LESSON PLAN
School : SMA
Class/Semester : XI/1
Subject : Biology
Time Allocation : 2x45 minutes
Competency Standards : 3. Describe the structure and function of human organs and
certain animals, abnormalities / diseases that may occur as well as
the implications
Basic Competence : 3.2 Explain the relationship between structure, function, and
processes as well as disorders / diseases that may occur in the
circulatory system
I. Indicator
1. Explaining the structure and blood components
2. Describe the function of the blood in humans.
3. Describe the various blood groups in humans.
II. Learning Objectives
1. Student can explain the components of blood.
2. Student can explain the structure of blood.
3. Student can describe the function of the blood in humans.
4. Student can describe the various blood groups in humans.
III. Learning Materials
1. Student can explaining the structure of constituent components blood
Blood consists of many components (constituents). These include:
circulatory system
55% Plasma
45% Components (sometimes called "formed elements"), i.e.
'Blood Cells'. Of these,
99% are erythrocytes (red blood cells)
and 1% are leucocytes (white blood cells) and
thrombocytes (blood platelets)
2. The function of the blood in humans.
a. Transports
o Dissolved gases (e.g. oxygen, carbon dioxide)
o Waste products of metabolism (e.g. water, urea)
o Hormones
o Enzymes
o Nutrients (such as glucose, amino acids, micro-nutrients
(vitamins & minerals), fatty acids, glycerol)
o Plasma proteins (associated with defence, such as blood-clotting and anti-bodies)
o Blood cells (incl. white blood cells 'leucocytes', and red blood cells 'erythrocytes').
b. Maintains Body Temperature
c. Controls pH
the pH of blood must remain in the range 6.8 to 7.4, otherwise it begins to damage
cells.
d. Removes toxins from the body
the kidneys filter all of the blood in the body (approx. 8 pints), 36 times every 24
hours. Toxins removed from the blood by the kidneys leave the body in the urine.
(Toxins also leave the body in the form of sweat.)
e. Regulation of Body Fluid Electrolytes
Excess salt is removed from the body in urine, which may contain around 10g salt
per day
(such as in the cases of people on western diets containing more salt than the body
requires).
3. The various blood groups in humans
IV. Source / Learning Materials
Biology Science Book 2A, Henny Riandari, Tiga Serangkai, Solo, 2007, 16–22 pages.
V. Teaching Materials
White board
Board marker
Laptop and LCD
VI. Learning Steps
Phase of Student Team Achievement Division
1st meeting
Phasebehavior Time
AllocationTeacher Student
Pre learning
Teacher greeting
Teacher absent the
students
Teacher present the
Learning Objectives
Students answering
greetings
Students answered
Student record
5 minutes
Early Activities
1st Phase:
Presents the
objectives and
motivate
students
Teachers present all
the learning
objectives
Teachers provide
apperception "did
you ever injured by
knife?" What you see
Students listen to
and record the
learning objectives
Students answer a
teacher's question
by relating the
events that are
known from the
surrounding
environment
10
minutes
2nd Phase
presenting
information
The teacher presents
information to
students about the
blood function
Students observe
and record
important
information
presented teachers
10
minutes
3rd phase
Organize
students into
learning groups
The teacher showed a
flash player about
blood type
Divide students
into five groups of
heterogeneous
Students attention to
the video shown by
the teacher
Students move with
his group
25
minutes
Main Activity
4th Phase:
Guiding study
groups and
working
Teacher gives
worksheets to
students for
discussion and
presentation
Teachers guide and
supervise the
discussion
Students receive
worksheets
provided by the
teacher
Students work on
worksheets that
teachers shared
35
minutes