Conversations - use this space to communicate about this project
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December 1, 2010 | 12:19 PM |
PS team
Farewell and Best Wishes As this research project is now in the final stages of wrapping-up, we wish to thank everyone who participated in this inquiry; the students, mentors, teachers and others behind the scenes. We appreciate all of your efforts and contributions to this online learning community. Scientific exploration is a process of discovery that can be fun! There are many unanswered questions about plants just waiting for new scientists to consider, investigate, and share. Please come back and visit the PlantingScience Research Gallery Archive anytime to view this project in the future. You can search the Archive by key word, team name, topic, or school name. Good bye for now. Warm regards, The PlantingScience team |
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November 22, 2010 | 4:21 PM |
Anne Alerding
(Scientist/Mentor)
Hi, It sounds like you have completed the experiment. Do you have any questions for me? Dr. Alerding |
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November 22, 2010 | 7:32 AM |
bryant57
(Student, the quack heads - ESU_F10_P10 · 3)
Yes, our hypothesis was supported when we ran our test. Bryant |
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November 20, 2010 | 2:49 PM |
Anne Alerding
(Scientist/Mentor)
Have you calculated variation for the three means (std. dev., for example) and conducted a statistical test to determine if the means are significantly different from each other? |
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November 20, 2010 | 11:52 AM |
arorebec
(Team Member)
The rates that are listed are the average 10 different measurements |
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November 19, 2010 | 3:21 PM |
Anne Alerding
(Scientist/Mentor)
Interesting results. Do you have any idea what photosynthesis rates are, normally, for red, sugar, and silver maple leaves (are they all pretty similar or do they differ due to various reasons)? If they're about the same (based on publshed literature), then you could say that the state of senescence is affecting photosynthesis. But if they're different, then perhaps rates of PS have nothing to do with senescence (and therefore color). Have you thought about looking into published studies to see what other researchers have found in terms of rates of photosynthesis of different species of maple? And.... the rates you list, are they the average 10 different measurements, for example, or just one? Do you have any idea how reproducible your results are? |
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November 19, 2010 | 1:57 PM |
havieri
(Team Member)
In addition... The green leaves are from Silver Maple, red maples are from Red Maple, and yellow leaves are from Sugar Maple. We didn't use many trees, just three of them (one from each kind) Moe |
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November 19, 2010 | 1:53 PM |
joleneh
(Student, Team Awesomest - ESU_F10_P06 · 3)
nice pictures -joe |
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November 19, 2010 | 1:41 PM |
molla
(Team Member)
Answers Dr. Alerding Thank you for asking questions. Here are my answers. According to our data, the red leaf has the highest rate of photosynthesis. We could not collect the different color leaves from the same tree. So, they are collected from different trees. The hight we collceted leaves at is constant. It is approximately 2 meter high. Yusuke |
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November 19, 2010 | 12:42 PM |
dja
(Student, Team Awesomest - ESU_F10_P06 · 3)
Good idea I really like the experiment. I would have never guessed that the red leaves would have photosynthesized the fastest! |
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November 16, 2010 | 3:07 PM |
Anne Alerding
(Scientist/Mentor)
checking in Hi team, I like your photos of equipment and you look well organized. It's an interesting question, that is, do leaves still photosynthesize as they are "changing" in the Fall and if so, which version (color, that is) might have the highest rate? So... I agree with your professor that you must act quickly because leaves are senescing and changing quickly. Have you started measuring rates of photosynthesis? Was it easy to find leaves from the same tree? Might be good to find leaves from the same vertical position (vs. at top/bottom of tree) to try to control for developmental/leaf-morphology differnces. How many replicates will you use? Are you going to use many trees? How're your preliminary results? Dr. Alerding |
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November 16, 2010 | 8:38 AM |
bryant57
(Student, the quack heads - ESU_F10_P10 · 3)
The one signed Bryant is me..... Bryant57...... I was on nicks laptop |
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November 16, 2010 | 8:36 AM |
nick34
(Student, the quack heads - ESU_F10_P10 · 3)
which plant came out on top with the higher rate of resperation. |
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November 16, 2010 | 8:33 AM |
nick34
(Student, the quack heads - ESU_F10_P10 · 3)
Looks like you guys are well on your way. So how is the experiment going so far? Bryant.... |
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November 15, 2010 | 2:31 PM |
PS team
Scientist Mentor Introductions We are happy to introduce the students to a scientist mentor for an online discussion of your project. Please meet Dr. Anne Alerding of Virginia Military Institute who will help your team think through your project findings. Sharing ideas is a huge part of science. We ask the mentors to provide some positive critique to challenge the students to look for alternative explanations, elaborate on their analysis, or move the project to the next step. We all look forward to reading your final analysis. Regards, The PlantingScience Team |
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November 1, 2010 | 7:03 PM |
Dr. S
(Scientist/Mentor)
Better hop on this - - the leaves are changing! When you get started you're going to have to be more specific about exactly the protocol you're following - - and upload it to your journal |
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October 4, 2010 | 8:00 AM |
PS team
Welcome! I am happy to welcome you to this community of plant researchers. These resources are available to help you get started: Thinking Like a Scientist / Working Like a Scientist Designing Experiments Guide to Using A Spreadsheet Best wishes as you start this scientific journey. We are all pleased to share this experience with you. Have fun! Sincerely, The PlantingScience team |
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