Recent Tutoring Session Reviews
"The student was happy to inform me that he received a 21/22 on his last quiz. He has a longer 40 point test tomorrow, so today was spent going over material on his test with emphasis on blood types. He is pretty comfortable with Punnett squares right now so we simply reviewed dihybrid crosses and the different fractions associated with them. The majority of the session was used to explore this concept of "codominance". This means that no allele is dominant over the other, rather they are expressed together. During the lesson the student was having a hard time describing to me what an allele was so we broke down phenotype, genotype, and allele again until I was sure these words were making sense to him. I drew a couple pictures of red blood cells with flags on them, kind of like how Neil Armstrong put a USA flag on the moon, and told the student the blood type is like having a "A", "B", "AB", or "O" flag. I also told him antibodies were like armies that attacked a cell with a different flag. Therefore, O blood has no flag and two different types of guns, while AB blood has the vice versa. The Rh factor is similar where + (a + flag) is dominate over -. In blood types A and B are dominant over O, but A is equal to B. We basically went over the 6 possible genotypes and the 4 phenotypes, who can accept blood from who, and how to determine if someone may or may not be someone's child based on blood types. We drilled 15 blood type Punnett squares and problems. His next unit is on sex dominate traits and epigenetics. He is doing extremely well and has showed tremendous improvement."
"We went over the circulatory system and started with the respiratory system. We covered the parts of the heart, the types of blood vessels and what makes up the blood. We covered the interrelatedness of the circulatory system and the respiratory system."
"We went over the genetics test that the student took last week and specifically the questions she got wrong. She is implementing the multiple choice test strategy successfully, and for the 5 or so questions she got wrong, was able to eliminate the obvious wrong answers. We then reviewed 2 of the lab experiments that she was told to do at home."