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# 117 - ABO Blood Groups - 1.30.05
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Bi-Weekly Science Lesson Plan List
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Jan 28, 2005 18:52 PST
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Hi everyone,
The Bi-Weekly lessons are back, just needed a little break with the
holidays, cold weather, and illnesses.
The lesson for this week focuses on blood types, mostly the ABO
groupings. I have found several types of activities to demonstrate this
concept and wanted to thank Mary P. for her worksheet/lab activity on
blood types and transfusions. Thank you!
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Lesson #1 - ABO Blood Typing using Food Coloring
I cannot tell you how wonderful food coloring is in the classroom. I
use it whenever we have any liquid measurings to do, density, and now
with blood typing. When I was in High School, we used to do blood
typing with our own blood in class, for health reasons, that is now
banned. In Mary's lesson, she has the student's set up beakers of blood
types and a beaker for the transfusion patient.
Blood type A is Red (*or Blue)
Blood Tpe B is Blue (*or Yellow)
Blood Type AB is Purple (*or Green)
Blood Type O is Clear
*You might want to try Blue/Yellow because the color change is easier
for the kids to pick up on, but its up to you.*
The students will transfer a small amount of liquid from Type A into the
patient Beaker to make the patient now Type A. Then the students with
do a transfusion and add more A to the patient beaker and note if there
is any change in color. No change = Safe, Change = unsafe. After they
record their results, they rinse out the patient beaker and place type A
into the beaker again. This time they add B to the patient for the
transfusion. They will notice a color change and record Unsafe, then
rinse and continue.
Some Tips:
Make a stock solution of food coloring so that the students can refill
when needed. That way you don't have tubes of food coloring around the
classroom, the color concentrations are consistent, plus its less messy.
Color Concentration for food coloring:
I use the ratio of 5 drops of food coloring for every 100 mL water. So
a 1,000ml beaker or flask would have 50 drops. Set these up ahead of
time. For purple do half red and half blue drops, for green I would
just use the green food coloring at 5/100mL.
If you have testing well plates, you can use these with disposable
pipettes. Keep the A, B, AB, and O beakers, with a pipette in each, and
have the patient be the testing wells. Fill one row with A, one row
with B, etc. And Across the top have one column A, next column B, etc
until you have 16 test wells. You don't need much colored water for a
color change to occur, plus it makes a cool visual when you have all
your results.
Here is the worksheet for Mary's Blood Type Lab as a pdf:
http://www.science-class.net/My%20Lessons/Human%20Body/Circulation/Blood%20Typing%20Lab.pdf
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Lesson #2 Making a Pie Chart and Bar Graph for Blood types
This is a nice lesson to incorporate graphing skills and reading for
information. Students can read about what percentages of the population
have different blood types and determine what tpye is the most common,
rarest, etc. Everything you need is included, even an answer key.
Here is the lesson in pdf:
http://media.nasaexplores.com/lessons/04-211/5-8_2.pdf
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Notes on Blood Types
Here is a wonderful site that you can use to get background information
and help make your class notes for blood typing. It goes into blood
types and genotypes plus has an interactive blood type calculator and
some problem sets for you more advanced students or as enrichment.
http://www.biology.arizona.edu/human_bio/problem_sets/blood_types/Intro.html
Information from the red cross on blood types:
http://chapters.redcross.org/br/northernohio/INFO/bloodtype.html
An informative site on blood that have some good graphics of blood:
http://gslc.genetics.utah.edu/units/basics/blood/
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Interactive lesson # 1
This is cute tutorial where students are doctors that have to determine
what blood type a patient has by drawing blood with a needle, and then
what blood type they have using the A, B, Rh test tubes, and then what
blood types would give a safe transfusion. It is a little on the hard
side, but it depends on the level of your kids. I find that when it
comes to computer games, they catch on really quickly and understand it
better.
The answers are: old man = O+, red head = AB-, and Punk = A+.
Here is the link to the game"
http://nobelprize.org/medicine/educational/landsteiner/index.html
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Interactive Lesson # 2 BrainPOP blood movie
If you have BrainPOP access, they have a Blood movie and quiz and well
as some other activities on their health site. I love the BrainPOP
movies but am really upset that they don't let you see a free movie each
day. Just my 2 cents.
Here is the link to the movie:
http://www.brainpop.com/health/seeall/
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Here is a link that you will need if you cannot open a pdf file:
http://www.adobe.com/products/acrobat/readstep2.html
Have a great week!
Liz
www.middleschoolscience.com
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