Check out this exchange between Chicago Science/Math Teacher Oscar Newman and Pearson.
November 17, 2012
To Whom It May Concern,
My school recently purchased Pearson's Interactive Science for our middle school students (6-8 Grades). While preparing for a lesson, I happened upon the following quote, from the Interactive Physical Science book 1 TE, p.119 Under "Science and Society": "The influx of oxygen changes blood's color from blue to red...Have students examine their arms to see if they have any blue veins. Explain that the blood in those veins is headed back to the heart and lung to receive more oxygen."
Really? I am appalled at the poor scientific review that this book apparently underwent. Even cursory editing would have prevented this error. Human blood is never blue.
Hemoglobin turns bright red when oxygenated. Deoxygenated (vertebrate) blood is dark red. Mollusks and some arthropods use hemocyanin, which turns blue when oxygenated due to the copper it contains, but our blood is never blue. Pigments in skin cause veins to appear blue. Those who have donated blood are well aware of this, in fact, I show my students a photo of me donating blood to dissuade them of this misconception.
I was on the team that decided to purchase this series for my school, and I am saddened that I did not catch this in time or have a chance to question the representative who sold this product. I will now thoroughly check these science texts to make sure that I do not have to waste valuable instructional time addressing this and other foolishness.
Please address this problem in future versions.
Yours in outrage,
NBCT (EA Science 2002, 2011) 7-8 Grade Science and Math Teacher
Chicago Academy Elementary School 3400 N. Austin Ave. Chicago, IL 60634Pearson responds to Oscar Newman
Question Reference #121117-000138
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So far, Oscar tells me he has received no call-back from Pearson. So for millions of American public school students and their teachers, human blood remains blue -- at least for the purpose of getting the answer right on the test.