We learn about blood types with this simple experiment.Students fill four plastic cups with water and put a different dye in each to represent the different blood types: red for type A, blue for type B, red/blue (or purple) for type AB, and plain water for type O. Then, I ask, "Can a person with type A donate to someone else with type A?" The students pour red water into the type A cup. (Incompatibility The inability of a Husband and Wife to cohabit in a marital relationship. incompatibility n. the state of a marriage in which the spouses no longer have the mutual desire to live together and/or stay married, and is thus a ground for divorce is indicated by a color change when "blood types" mix.) They continue down the line, putting the red water into the type B cup, and so on. When we've finished using each type as a donor, I explain "universal donor u·ni·ver·sal donor n. A person whose red blood cells do not contain agglutinogen A or B and are therefore not agglutinated by plasma containing either of the ordinary isoagglutinins, alpha or beta; a person who has group O blood. " and "universal recipient universal recipient n. A person who has group AB blood and is therefore able to receive blood from any other group in the ABO system. universal recipient, n " and ask which blood type would fit the bill.--Kathleen Heidenreich, seventh-grade teacher, Chinook Middle School Chinook Middle School can mean one of three schools in the US state of Washington:
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