Question: What scientific ideas or theories would help you explain why you are able to use the procedures to analyze evidence?
I think that the whole idea of the scientific ideas and procedures help us analyze the data is good to go over and reflect about. The procedures allow us to find much needed information to make educated inferences. For example, we used the plaster molding to figure out the type of shoe that stepped in the dirt found at the crime scene. Without scientific ideas or theories, we wouldn't have thought to do the tests that we do. In conclusion, without scientific ideas or theories, we wouldn't be able to be at the point in science that we are today. Science helps us progress in everything that we do everyday, ad we need that. We need science to guide us in life.
Question: Has your approach to lab procedures changed from the first round of labs? Are you more/less confident in your results? Why?
The first time approaching a lab procedure was a bit intimidating for me. I wasn't completely sure what was going on, and not sure what to do either. After asking for hep, I started to understand it a bit more. I would say that after doing many labs, I am now much more confident in the procedures, and in myself. I have realized that I have to slow down, and actually read the question instead of skimming over it, as well as over the story itself. As a result of paying more attention to detail, I have become more confident in everything. Confidence is a big majority of what science is made up of. You have to be confident in learning. You have to be confident, and want to learn. It is the same way with science.
Thursday, November 19, 2009
Friday, October 30, 2009
Science Lab Reflction
Question: What role do multiple observations/experiments play in making good inferences and conclusions in each case?
I feel that it is important to make educated observations in experiments because you can base your inferences and conclusions off of that information. If you don't have the correct information, then you will have incomplete inferences. This will throw off your process of learning, which is not something you want.
Question: When is it hard to be precise and how does this affect the confidence in the results? What did you do about this?
One example of this event was when we were measuring the conductivity of the water. The meter would range from one amount to the next. Finally, we would just have to take the average of the two numbers, but in the end, this might have not been the exact amount. This would matter because it does not make the confidence of the results go up. Instead they would go down. To fix this we tried to get as close as we could to the right answer.
Question: When can you rely on "known" data to match up with and when do you need to generate your own? What's the difference?
I feel that the Bullet Lab was a great example of this. Tanner and I would measure the weight, and type of bullet and try to determine which one it was. We would compare to the slide with all the different types of bullets. This had the "known" data, so to speak. For the fabric Lab, when we were sketching the different samples, we would have to generate our own opinion on what each sample looked like. All the sketches will be different for everyone, but all will have the same overall idea. The difference between known and generated data is that known data is the precise examples whereas generated data is educated data found by yourself.
I feel that it is important to make educated observations in experiments because you can base your inferences and conclusions off of that information. If you don't have the correct information, then you will have incomplete inferences. This will throw off your process of learning, which is not something you want.
Question: When is it hard to be precise and how does this affect the confidence in the results? What did you do about this?
One example of this event was when we were measuring the conductivity of the water. The meter would range from one amount to the next. Finally, we would just have to take the average of the two numbers, but in the end, this might have not been the exact amount. This would matter because it does not make the confidence of the results go up. Instead they would go down. To fix this we tried to get as close as we could to the right answer.
Question: When can you rely on "known" data to match up with and when do you need to generate your own? What's the difference?
I feel that the Bullet Lab was a great example of this. Tanner and I would measure the weight, and type of bullet and try to determine which one it was. We would compare to the slide with all the different types of bullets. This had the "known" data, so to speak. For the fabric Lab, when we were sketching the different samples, we would have to generate our own opinion on what each sample looked like. All the sketches will be different for everyone, but all will have the same overall idea. The difference between known and generated data is that known data is the precise examples whereas generated data is educated data found by yourself.
Tuesday, September 15, 2009
Sound of Science
When Mary called the restaurant to make a reservation, the wait was about an hour long. "An hour?," Mary says, surprised. "Okay, we'll be there in an hour," she says. She yells up to Spencer's room, and Robert's room. "Boys, dinner in an hour." "Alright," they rely, with little enthusiasm. Spencer is almost fifteen years old, the oldest son, and Robert, at thirteen, the younger of the two. "Oh god, the baby!" mutters Mary under her breath. She now remembers that she left the baby in her crib with the door open. Krista, now one and a half years old, has a tendency to crawl out of her crib, and wander around the room. The problem is that now that Mary left the door open, the baby has full access to the top floor of the house, not to mention the stairs. " How could I be so stupid?" wonders Mary as she hurries up the stairs. "I looked at the top of the stairs when I called up to the boys, and she was no where in sight," she thinks.
When she reaches the top of the stairs, the baby isn't in her room or in the hall. She asks the boys if they have seen her, but neither of them have. "Where could she be? She is little, she can't go far..." she mentions, reassuring herself. She looks once more in her crib, no Krista. The window is open. "She wouldn't," she thinks to herself. "She couldn't have..." Mary runs to the window, and looks out. All that she sees is a few birds in the tree across the street, and neighborhood kids running around. Then she glances at the closet, with its door hanging wide open. "Please," she thinks. She looks in the closet. She finds boxes full of books, coloring pages, and dresses and jackets hanging on various hangers. Then she sees. Krista is playing with her dollhouse behind one of the big boxes. "Thank god!" she says. "Krista, Krista baby, here I am," she says with delight. She picks her up and brings her down to the kitchen securing her in her high chair. She went to the cabinet, rifling through the various baby food jars until finally reaching the right one. "Her you go honey," says Mary, handing the food to Krista. Krista, who seemed quite hungry, shovels it into her mouth, one spoonful after another. "Slow down there, you don't want to get a stomach ache, and besides," she adds, "We will be leaving soon for the restaurant anyways."
When she reaches the top of the stairs, the baby isn't in her room or in the hall. She asks the boys if they have seen her, but neither of them have. "Where could she be? She is little, she can't go far..." she mentions, reassuring herself. She looks once more in her crib, no Krista. The window is open. "She wouldn't," she thinks to herself. "She couldn't have..." Mary runs to the window, and looks out. All that she sees is a few birds in the tree across the street, and neighborhood kids running around. Then she glances at the closet, with its door hanging wide open. "Please," she thinks. She looks in the closet. She finds boxes full of books, coloring pages, and dresses and jackets hanging on various hangers. Then she sees. Krista is playing with her dollhouse behind one of the big boxes. "Thank god!" she says. "Krista, Krista baby, here I am," she says with delight. She picks her up and brings her down to the kitchen securing her in her high chair. She went to the cabinet, rifling through the various baby food jars until finally reaching the right one. "Her you go honey," says Mary, handing the food to Krista. Krista, who seemed quite hungry, shovels it into her mouth, one spoonful after another. "Slow down there, you don't want to get a stomach ache, and besides," she adds, "We will be leaving soon for the restaurant anyways."
After taking about twenty minutes to get everyone together, Mary packs everyone into the car. "Dad is going to meet us there," says Mary. "He just got out of a meeting." The restaurant is on the other side of town, so it takes about fifteen minutes to get there. The boys listened to there music, and Krista just looked out the window, amazed by the many sights of the world. When they finally pulled into the restaurant parking lot, it was packed with cars jammed into parking places. The restaurant was a modern building, with outside seating as well as inside seating. The family walked in, meeting Anthony-their dad, there. "Hey!" he said to the kids. "Sorry I was late," he said with apology. "It's fine," Mary said. "Let's just get a table," she added.
At the table, the setting was clearly fancy. Silver-ware had been polished to shine, and the napkins were lace. After ordering drinks and entrees they talked about school, and Mary's search for Krista. Spencer told Mary a joke he learned in school made her laugh, and I mean laugh hard. The food came, and the scratching noise made by the utensils skimming across the plates while the family ate annoyed Anthony. The noise was too much for him, and he already had a previous head-ache, so he got up, sliding his chair out, and left for a break outside. It certainly had been a long and hard night for him, and there was still much more to come.
Subscribe to:
Posts (Atom)