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Tutor profile: Jakson M.

Jakson M.
Graduate Teaching Assistant for 2 years

Questions

Subject: Biology

TutorMe
Question:

Experimental design: To assess your critical thinking skills and creativity, please design an experiment using a variable from the list below and describe how you will measure and interpret the data from one of the biologic or behavioral responses given. For this essay question you will pretend to design an experiment on the water flee (Daphnia magna), be sure to state your hypothesis, your variable(s) and control(s) as well as what response you will be measuring and why. You may assume unlimited funding, unlimited time, unlimited resources, and unlimited technology to design your experiment. There is no right or wrong pairing of variables or responses, rather, you will be graded upon your experimental design and rational thought behind it. Variables: 5mg Caffeine exposure 4 Celsius water incubation 50 Celsius water incubation 2 pH solution exposure 12 pH solution exposure Floating plants Minnows Feeding Responses: Positive or negative chemotaxis (qualitative assessment allowed) Increased or decreased heart rate Increased or decreased activity (qualitative assessment allowed) Swimming pattern Location in water column (top, bottom, middle, hiding) Death Grouping or avoidance of others

Jakson M.
Answer:

Hypothesis: Treatment with caffeine will increase the heart rate of the water fleas. Variable: 5mg Caffeine Response: Heart rate Design: I will obtain 6 identical containers each containing identical levels of water (same water the fleas currently reside). In each container I will place 20 water fleas from the same culture container. All of the containers will be placed on a gently lit surface with a white background and a high speed camera above each container. I will select someone competent who is not involved in the experiment to label the containers 1-6 and randomly add 5mg of caffeine powder to 3 of the containers and record their actions. I will then have that individual gently stir each container for 30 seconds with a clean stir rod each time. Using the high speed cameras and video tracking software, I will measure the heart rates of all the water fleas simultaneously in each cup and compile an average heart rate for the cup of 20 water fleas as well as a standard deviation for that cup. These data will then be matched back to the record of the outside individual detailing what container had caffeine powder added. Rational. I have chosen this method to ensure that I am blind to the experiment to help remove bias from the study. A clean stir rod was used each time to avoid cross contamination between the treatment groups (caffeine added) and the control groups (no caffeine added). Near identical stirring action across the containers reduces the chance that a result is due to the stirring rather than the addition of caffeine. This concept also applies to the identical water volumes, identical lighting, background and water fleas per container. Interpretation: I will assess the data to determine if the addition of caffeine had any impact on the heart rate of the water fleas as caffeine is a documented stimulant in vertebrate animals. I will choose to support my hypothesis if the average heart rater of the caffeine treated fleas is statistically significantly higher than that of the control. I will reject my hypothesis if the the average heart rater of the caffeine treated fleas is not statistically significantly higher than that of the control.

Subject: Education

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Question:

Prompt: Read the statements below and write an explanation on why you agree with a particular statement. A: It is the responsibility of the instructor to teach in a manner that is compatible with everyone's learning style. B: It is the responsibility of the student to adapt their learning style to fit the delivery method of the instructor. C: It is the responsibility of the parents to prepare their children for a classroom learning environment D: Classroom learning is a group activity with no single party playing a more important role.

Jakson M.
Answer:

D: Learning is a group activity with no single party playing a more important role. I have selected option D as I feel this option best represents the world we live in as well as my philosophy in the classroom/lab. If we were to break apart the two primary groups of people in a classroom we would have the instructors and the students. Typically, the instructor is well versed in the subject they are teaching and the students are novices at the task or have not previously been exposed to this knowledge before. Continuing with this idea, an instructor is not actively teaching anything if none of the students gain knowledge or familiarity of a subject. If the students absorb nothing from the lesson it is equivalent to lecturing to an empty room. Instructors usually make attempts to convey information in a variety of manners to reach the most students possible, however, no lesson is perfectly delivered and no two students are the same. Therefore it is important that both the students and the instructor work together to ensure proper delivery of a message or laboratory technique. Finally, an instructor may be an expert in a given field but have missed a point of view due to implicit bias. Students bring a variety of viewpoints to the class and through their questions, teach the instructor on how to view materials from a different lens. Without the interplay between both parties, classroom learning is far from educational.

Subject: Communication

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Question:

Background: Communication is based upon a variety of signals both verbal and nonverbal. Verbal examples of communication are tone, sentence structure, the actual words spoken, and many other auditory signals. Nonverbal communication pertains to body language, situation or environment, perceived attentiveness, and a plethora of other indicators. Scenario: Keeping these concepts in mind, let's examine an artificial scenario in whichh John and Jane are arguing over how to best spend their money. The argument becomes volatile and John refuses to talk to Jane. Instead of talking, John communicates that he does not wish to discuss this topic further by repeatedly avoiding eye contact with Jane and walking away from her silently when she speaks to him. Question: Some scholars have asserted that it is impossible NOT to communicate. Do you agree or disagree? Explain why you have formed this opinion. In your response please make at least one reference to the situation discussed in the scenario section.

Jakson M.
Answer:

Answer: Agree--In the above mentioned scenario John and Jane are communicating with each other regardless of how well the conversation is going. There is likely a high rate of miscommunication based upon the evidence presented, however, miscommunication still constitutes communication. As discussed in the background section, nonverbal actions such as giving Jane the cold shoulder would be considered a form of communication. Answer: Disagree--In the above mentioned scenario John and Jane are communicating the duration of the interaction based upon the definitions provided in the background section. Initially John and Jane used verbal communication, however, at some point John switched to strictly nonverbal communication. The key here is that an interaction took place. I assert that if no interaction takes place, such as when someone is sleeping, that no communication has occurred. The argument could be made that someone who is asleep is choosing to sleep rather than have a conversation, however, sleep is a biological need for people and to go without it can lead to a variety of health concerns such as psychosis. Therefore, it would be unreasonable to call sleeping a form of nonverbal communication. Due to the fact that all humans sleep, we all have periods of time where we do not communicate which contradicts some of the scholars beliefs.

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