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November 25, 2008 | 10:59 AM |
Jessica1234
(Team Member)
Goodbye Thank you for all of your help during this experiment; your input was very helpful. This will be our last time signing in as a group, we thank you very much, goodbye... and Happy Thanksgiving!!!!!!!!!! -The Buds |
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November 22, 2008 | 11:31 AM |
Dr. Daniel Gladish
(Scientist/Mentor)
NIce Work! Dear Buds: You did an excellent experiment. It is not always the case that an experiment gives such clear results. The results make sense don't they? This allows plant seeds to deal with a wide variety of situations they might face in the real world, which is a good thing since they usually have little control over how they end up being oriented. It is clear that evolution favors individuals that are versatile. I hope I was of some help to you all during this experiment, and I hope I can help you again in the future. You are welcome to contact me or my colleagues in the Botany Department at Miami University, Oxford OH. We are glad to help. Cheers, Dan Gladish |
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November 18, 2008 | 8:52 AM |
jpotratz
Good bye Thank you to everyone who participated in this inquiry. We hope you are going away with some new insights about how science works, and confidence that you can take on new scientific challenges. There are a lot of fascinating research questions---just waiting for young investigators to join in the fun. Best wishes for the remainder of your school year! |
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November 18, 2008 | 7:57 AM |
Jessica1234
(Team Member)
conclusion Raticle Buds Conclusion: 11/11/08 Our plants, despite being sideways and upside down, had roots growing towards the ground and shoots growing towards the sky. Our experiment proves that geotropism takes effect no matter the position of the pot. |
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November 18, 2008 | 7:56 AM |
Jessica1234
(Team Member)
3 questions 3 Questions: 1. Would our seeds grow with sugar water soaking the paper towels? 2. Would two different types of seeds work in this experiment? 3. Would this experiment work if our beakers were in a light excluded room? |
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November 17, 2008 | 11:27 AM |
Jessica1234
(Team Member)
technical difficulties. We are having a problem uploading some of our items. Sorry for this inconvenience. |
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November 11, 2008 | 8:05 AM |
Jessica1234
(Team Member)
journal entry#3 11/11/08 Journal entry 3 Raticle Buds The seeds are spreading up towards the sky in all pots. The seeds that are right side up are growing higher. The seeds that are growing upside down are the next highest. Followed by seeds on their sides. Roots are growing towards the ground and the shoots are growing towards the sky. They are growing as we expected them to. |
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November 10, 2008 | 11:09 AM |
Jessica1234
(Team Member)
journal entry 2 continuation Journal Entry #2 continuation- Our roots have still continued to grow at a normal rate. The right side up corn seeds have started growing stalks, and our being restrained by our plastic wrap because they are growing so tall. Our upside down corn seeds are also growing straight towards the ground, though they have not yet started to grow stalks. Our sideway corn seeds have still not sprouted a lot but they are growing towards the ground. |
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November 7, 2008 | 7:56 AM |
Jessica1234
(Team Member)
Journal Entry #2 Group 3: RaticleBuds Journal Entry #2- The roots have definitely started growing a lot. Some have even started growing their green stalks. Most of them have continued to grow towards the ground. The sunflower seeds have not as been successful as the corn seeds. The corn seeds have really grown their roots. The upside down corn seeds have started to grow sideways, we think they are trying to get to the ground but as of now they are growing sideways. The sideways corn seeds have not sprouted a lot, but they are growing towards the ground. The right side up corn seeds have had the most successful growing periods, they are growing straight towards the ground and have even begun to grow their stalks. |
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November 6, 2008 | 11:38 AM |
Dr. Daniel Gladish
(Scientist/Mentor)
Good improvements Dear Raticle Buds: I really like the improvements you have made in your experiment. I especially like it that you decided to test a group entirely upside down as well. That is a fun idea. I think you will be able to get some interesting results. Cheers, Dan Gladish |
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November 5, 2008 | 8:14 AM |
Jessica1234
(Team Member)
journal entry 1 Journal Entry (1) Sunflower seeds: Our sunflower seeds are black, small, WET, the water has turned yellow, and there are a lot. Corn: We observe that we think our corn seeds have gotten bigger, our water has remained the same color, they are WET. Our seeds have been soaked for about a whole weekend, and are now ready for our lab experiment. Day3- We have one beaker standing straight up, one beaker on its side, and one beaker upside down. All seeds are facing the same way. The beaker that is standing straight up, the roots are growing good, straight towards the ground. The beaker that is upsides down the roots started growing up and is now turning to the side starting to grow towards the ground. The beaker upsides down started growing straight up and have started to turn and are also trying to grow towards the ground. They are all trying to achieve geo-centricity |
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November 3, 2008 | 11:08 AM |
Jessica1234
(Team Member)
--- For your first question, sorry for the typing misconception, we did indeed mean the seed. Also, we are not using pots, we have changed our pots to transparent beakers.To your other suggestion, yes, we are not using only five seeds per cup, we are using about 15-20. I hope these fixations are good for you. Post-Script- We are having a guest speaker in science class tomorrow, and will therefore not be checking our labs until Wednesday. Till then: -The Raticle Buds |
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November 1, 2008 | 9:54 PM |
Dr. Daniel Gladish
(Scientist/Mentor)
Language and sample size Dear Jessica and other Buds: Can we talk about language a bit? Regarding your "essential question", I don't think you actually said what you meant to say. You asked, "Does a pot ... germinate and grow"? Pots do not germinate and they do not grow. I'm sure you know that, so I think you must have been referring to the seed - but that is not what you wrote. Is the seed turned on its side, or is the pot turned on its side? It is not clear from what you wrote what you really meant. People will only read what you write or hear what you say, they cannot read your mind to know what you meant. So I recommend that you have a thoughtful friend or your teacher check your reporting carefully so that you won't confuse your readers. I always do that before I submit something. I think you meant, "Does a seed in a pot that is turned on its side germinate and grow at a slower rate than a seed in a pot standing right-side up?" The other important idea I want to share is that one seed for each treatment is nowhere near enough. Are people all the same? Are siblings even all the same? Almost every individual living thing has something different about it, even when compared to its closest relatives. So when you are testing one sunflower seedling compared to another you cannot be sure that a difference you see between them is due to the difference in experimental conditions or just due to natural genetic differences within species. It is unlikely, however, that several seedlings of the same species will have all the same genetic quirks. So, if you germinate and measure several (say ... five seeds for each condition) you will be more likely to see any real differences due to the orientation of the pots. Also consider that seeds do not all germinate. That is another reason to plant several seeds for each of your treatments. It is OK to test two species. I see you've chosen sunflower (Helianthus anuus) and corn (Zea mays), so you'll need at least 10 seeds of each and at least four pots. You can probably plant all five seeds in one pot per treatment, but don't forget that, no matter which way you orient your pots, the seeds must not be "buried" more than about 2cm from the tops of the pots, or the seedlings will not grow normally. If you want to use paper towel, you should probably try cutting a strip of towel the same width as the pots are deep, lay the strip out on a counter, moisten it with water, then place the seeds about 2 cm from one edge, and carefully roll the paper up. Place the cylinder of rolled up paper in the pot with the seed-edge toward the top of the pot. You may have to put some more wadded up, moist paper towel around the cylinder to keep it in the center of the pot. There are some suggestions I hope you find useful. Cheers, Dan Gladish |
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October 31, 2008 | 7:57 AM |
Jessica1234
(Team Member)
Our procedure: LAB PROCEDURE: Essential Question: Does a pot with a seed in it turned on its side germinate and grow at a lesser rate than a pot with a seed in it standing right side up? Materials: Plant pots, water, sunflower seeds and corn, sunlight, and wet paper towels. Variable: Position of the pot. (One is on its side) Controls: type and number of seeds, pot type and size, same amount and type of wet paper towels, and sunlight. Hypothesis: The plant on its side will germinate and grow at the same rate as the plant that is right side up. Procedure: 1. Plant four sunflower seeds and corn in each identical pot and fill with same amount and type of wet paper towels. 2. Turn one pot on its side. 3. Set the pots on the window sill so they are exposed to the same amount of light, and water the same amount for one week. 4. Every day record details and heights of each plant, and make a graph of plant heights. 5. Measure the root lengths at the end of one week, and add to the data. 6. Use your data and graph to draw a conclusion. Conclusion: soon to come….. P.S. We are starting the lab on Monday. |
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October 30, 2008 | 5:15 PM |
Dr. Daniel Gladish
(Scientist/Mentor)
Choosing the question Dear Buds: Well, all of your questions are interesting for different reasons. I am curious as to why you proposed each one. Regarding the first two. I would like to know what made you ask those questions. That would help me help you choose. The choice in the end has to be yours. Cheers, Dan Gladish |
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October 30, 2008 | 10:19 AM |
Jessica1234
(Team Member)
Procedure We are sending our seed procedure tomorrow (Friday 8-31) |
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October 29, 2008 | 8:18 AM |
Jessica1234
(Team Member)
P.S. We like one and two the best, but you can choose. |
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October 29, 2008 | 8:12 AM |
Jessica1234
(Team Member)
Essential Questions 1. Will putting a seed in salt water germinate slower as to a seed in fresh water? 2. Does a seed grow at a different pace when it is on its side? 3. If one is in orange juice and the other is in tobacco juice which one will germinate faster? 4. Will electrolytes from powerade make a plant grow as fast as it would with water? 5. Will seeds germinate faster in hot water or cold water? |
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October 29, 2008 | 7:48 AM |
joey2
(Team Member)
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October 27, 2008 | 11:11 AM |
Jessica1234
(Team Member)
Essential Questions We are working on essential questions, we will e-mail to you Tuesday or Wednesday. Bye, TheRaticleBuds (Jessica, Joey, John, and Abby) |
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October 25, 2008 | 3:10 PM |
Dr. Daniel Gladish
(Scientist/Mentor)
Hello St. Sebastian team #3 Dear Team: I read Dr. Hemingway's welcome letter, and I noticed that she got my name partly wrong. I am Daniel Gladish (my friends call me Dan), and I am a professor in the Botany Department at Miami University, which is not in Florida, by the way. Miami University is in Ohio near Cincinnati. The name "Miami" is from the native American people who lived in this area before the pioneers came. The name got to Florida because the people who developed the land in south Florida were from Ohio and they used familiar names, such as Daytona Beach which is named after Dayton, OH. We have a saying: "Miami was a university when Florida belonged to Spain" - which is true. Our university is almost 200 years old. I look forward to hearing about your experimental design. Cheers, Dan Gladish |
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October 23, 2008 | 12:25 PM |
Claire
Welcome to PlantingScience! Hello St. Sebastian Team 3, I am delighted to welcome you as a new member of the community of plant researchers. I would like to introduce you to Dr. David Gladish of the Miami University. He will be your scientist mentor, talking with your team as you plan and carry out your seed experiments. Expect to see a note here soon. In the meantime, we'd love to hear your initial brainstorming ideas and questions. Talking things over at the beginning of a project is especially important. I'll kick off the conversation with an easy (and fun) question: What team name have you chosen? All best wishes as you embark on this scientific journey. We are all pleased to share this experience with you. Regards, Claire Hemingway |
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