Sunday, December 5, 2010

Modeling Earth Science

The lesson plan implemented that required the use of a model was a scaled version of a solar system on the basketball courts. The students were required to walk the orbit of each planet for one minute and log how much of a revolution they were able to complete during that time.
The students obtained the goals and objectives during this lesson. Using the model solar system scaled down and having the students be active participants was a concrete tool to getting the meaning across to the students. Prior to doing this activity, students were struggling with the distance factor in space. They were looking at pictures in video clips, in the textbooks and other resources, but they were not able to make the connection to how far apart the planets were from each other. After we completed our revolutions, the students seemed to grasp the concept much easier. Another concept the students were struggling with was the different sizes of the planets. A great slide show that erased all misconceptions is found at http://www.rense.com/general72/size.htm. This is the best model comparison that I have found anywhere on the Internet.
I know the objective was met because the students were successful in answering the question sheet that they were required to answer on their own. We were also able to have meaningful, in depth discussions that moved up Bloom’s taxonomy after completing this activity. Prior to the completion of the modeling activity, students were not able to speak to the level that they did afterwards. This demonstrated that goals were not only met, but concrete understanding had taken place.
The only area that I would change in the future is the calculating of the solar system scale. In the future, I would see if the math teacher could incorporate this portion into their lessons. I believe that this would strengthen the math aspect and make it less time consuming and frustrating for students. Students seemed to find that part of the lesson to be the most confusing. Even though I had already measured off and created the scale on the basketball courts, I wanted the students to see how the scale was calculated.
Having the model as part of the lesson was crucial in teaching the standard. If the model had not been included as a component, I do not believe that students would have been able to grasp the concept as concretely as they did. I have found that when we bring models into the classroom students learn and enjoy it at a different level. When we studied biomes, students created biomes that included plants and animals indigenous to that biome. Our next models will be on the phases of the moon and eclipses

Tuesday, November 23, 2010

Natural Disaster information

As I have done in a previous blog discussion, I used Jello to demonstrate the different faults. Students constructed buildings of different heights. Students also used toothpicks as a structure support. They were then asked to complete application questions about building stronger buildings, how life is affected by earthquakes, and location of fault lines. Students watched different videos of earthquakes: before, during, and after. They were then able to see the destruction that an earthquake does to the land and the property on the area.

After our floods here in Nashville, I think students realized the importance of helping out strangers in their community. Seeing the devastation of an earthquake may promote the giving and helping to people they do not know.

Sunday, September 26, 2010

Ask a scientist

I submitted my question to the "Ask a Scientist" website to glean more information about my endangered species. I have yet to receive a response from the website.

I believe the website can be a great tool for students when they are doing research for science fair projects or to search for archived questions for homework. Teaching students to seek questions and answers out for themselves is a valuable tool. I believe students rely on others to give them the answers instead of finding the information and working to gain the knowledge.

Sunday, September 12, 2010

Evaluating Web tools

The first tool I tried out was the Prezi. I watched the tutorial and decided the application looked pretty exciting to use. Once I logged onto the website, I viewed several of the previously created templates. I found a few of the presentations to be rather intriguing and could help stimulate learning. I think the presentations would be more suited for a older crowd and not my 6th grade students. I do not know how well I would like this tool for my students. I have not personally made a Preze yet.

The next website I visited was PreZentit. I enjoyed this website the best out of all the one's listed on the resources pages. I found it to be the most user friendly when I tried it out and one I was most accustomed to since it is similar to PowerPoint. It is more exciting than PowerPoint, but the premise behind the presentation seems to be similar.

The Zoho link did not work when I clicked on it. It said it was not found. I do not know if I am the only student in the class that had this problem.

I did not try uploading photos to animate slide shows on Animot, Vividex, and Vcasmo.

Sunday, June 27, 2010

21st century learning tools

During my Internet research on Newton’s Laws of Motion, I found a variety of labs that could be turned into guided inquiry investigations for students that would foster their scientific learning. One that students may find interesting because it involves building ramps and playing with Hot Wheels cars is found at http://teachertech.rice.edu/Participants/louviere/Newton/hotwheels.html. For this lab, the procedure could be omitted and the teacher could pose the guiding question to the students. The students would then use the materials to write their own procedures and become more scientifically literate individuals.
Another powerful tool for students to complete is a Web Quest. This will build upon their knowledge and their technology skills that are a must in the 21st century. A great Web Quest can be found at images.pcmac.org/Uploads/.../newtons%20laws%20webquest.doc. Students can work independently or collaborate with each other to ensure they understand the key ideas correctly.
A physical activity that would differentiate instruction and make students apply Newton’s laws to real world scenarios is based on a SeaWorld/Busch Gardens animal game that would divide the class up into groups. The teacher would not have much preparation for this activity and it would benefit the students to see that physics applies to all aspects of the world. This activity can be downloaded from www.seaworld.org/.../classroom.../Newton%20Laws%20of%20Motion.pdf.
All of the above referenced ideas of motion would be easy to bring into the classroom with prior planning and access to laptops. The Hot Wheels lab requires the most planning and gathering of materials. Students will benefit from the use of manipulatives and technology in the classroom. Teachers should no longer be using direct instruction as the main source of teaching in the classroom. There are many more valuable resources available that will captivate, teach and prepare students for the 21st century.

Tuesday, June 1, 2010

The Heat Is On

In this week's investigation, we were asked to test insulators out to see which item held heat the best in a mug with hot water. Like in week's past, the instructions were fairly vague. The person doing the experiment was able to choose the items they wanted to use as the insulators. The first item of business a person may want to do prior to conducting this lab is to know what the term insulator means: "any material used to slow heat transfer" (www.ase.org, 2010).

The items I selected were a thin piece of cardboard, plastic wrap, a piece of paper, and a piece of linen. I hypothesized that the cardboard would be the best insulator. I chose this item because it seemed like the material that would allow the least amount of heat to escape. The cloth has fibers that will allow air to escape through and cool, the plastic wrap will allow for condensation of water on top and it will fall back into the mug and cool the other water, and the paper will get soggy from the steam of the hot water and will allow for heat to be released.

Once I selected my materials and made my hypothesis, I gathered four ceramic mugs up and filled them with water a temperature of 100 degrees Fahrenheit. One insulator was then placed over each mug secured with a rubber band. A timer was set for exactly thirty minutes. Once thirty minutes had elapsed, the rubber bands were removed and a final temperature reading of each mug was recorded.

Piece of paper final temp: 82
Cardboard final temp: 80
Plastic wrap final temp: 82
Linen cloth final temp: 86

After recording my data, I was surprised to see that my hypothesis was incorrect. I had predicted the cardboard would keep in the most heat and in fact, it held in the least amount. Perhaps I did something incorrect in my experiment or my prediction was just off. Potholders are made from cloth and insulate with cotton materials to keep the heat from burning one's hands. If i would have pondered that aspect more, I may have began with a a different choice at the beginning.

If I were to do this in my classroom and I wanted to make it more relevant to my students, I would use a soup or try it with clothing. For clothing, see if different colored jackets made a difference to being a better insulator for heat. Students could take the temperature inside the jacket. Even if the same project was used, as long as the students were allowed to bring in materials from their own residence to test, I think they would see the relevance and it would be fun. They would have buy in and each group would have different variables. When groups presented their findings, it would be interesting for the class to make a conclusion on what type of materials were better insulators than others.

Sunday, May 16, 2010

Engaging in guided inquiry

What is the effect of large objects colliding with smaller objects?

For the lab, I used two sets of objects to collide into each other on a smooth surface.
  • lightweight plastic car versus heavier plastic/metal Jeep
  • large, blue marble versus small, purple marble
I was not sure if large meant size or mass, so I opted to try a set of objects using each. I first set up three trials using the car/Jeep items. The first collision, I did not put much force behind the collision and the two cars stopped once they collided. For the second and third collisions, I decided to put more force behind the cars. When the two cars collided, the lightweight plastic car, bounced backwards and to the side. It did this on both the second and third collisions.

For the marbles, I rolled them towards each other at a moderate speed. I again set up the investigation for three trials. For all three trials the same exact outcome occurred. The large, blue marble collided with the smaller, purple marble, sending the purple marble backwards and at an angle.

The results were what I expected. A larger object that collides with a smaller object would push the smaller object backwards. The greater the force, the greater the smaller object is forced back.

This would be an easy lab to set up for students to do in the class as a guided inquiry investigation. I think that students of varying levels could work together and come up with the end result. There were not any challenges in setting up the lab or conducting the lab.

Sunday, April 11, 2010

Week 6-Structured Inquiry Lesson

This week I was able to implement my lesson that I wrote in week 5. My lesson was for my 7th grade class and it was based on our current topic of discussion--earthquakes. I wanted the students to have a hands on experience with creating an earthquake and determining the different types of faults they demonstrated.

In order to do this lab, we used Jell-o jigglers as our plate tectonics, toothpicks as our roads, and mini marshmallows for buildings. According to Banchi and Bell, the type of inquiry used in this lab was structured inquiry because a guiding question was given by me and an overall lab directions were given, however students were still expected to come up with a conclusion based on what they believe would occur when they performed the lab (Banchi & Bell, 2008). Students were to use previously acquired knowledge on plate tectonics to make a solid hypothesis prior to starting the lab. Structured inquiry is considered a lower tiered level of inquiry, which while I push this group of students, works well considering the class dynamics (Banchi & Bell, 2008). This particular class has 6 students on IEP's and the other students are also low academic achievers.

Prior to passing out any supplies, I made sure to go over all safety protocols for the class. I wanted to ensure that no one would consume any food even though they may think they knew what it was. I did not want them to do what Mr. Houston did in his guided inquiry video demonstration (Laureate Education, 2010). After we went through all expectations, we passed out lab sheets and supplies. The students formulated their hypothesis and the work began.


The students read their lab sheets and went step by step through becoming architects of building of different tiers to see which one's could withstand earthquakes better.


After construction, came demolition time. The students then had to reflect on what occurred in their lab and relate it to the real world. How could anchoring a building with a toothpick affect a building in the real world?


After we created our buildings, we created faults. The students were to create divergent and convergent faults, build a "road" out of toothpicks across the fault. What would happen when the fault shifted? Again, they were to relate this to the real world and illustrate it on their lab sheets.




We ran out of time during the class on Friday for the students to complete their lab sheets in class. They were to complete their data analysis at home and will hand in as part of their homework assignment tomorrow.

Reflection:

For the most part, the lab was a success. The class was on task about 90% of the time. It is a small class, 15 students, and we were able to work in groups of two. We experienced a few moments where redirection was necessary for behavior. One student decided to throw marshmallows and had to be removed from the lab. When I developed the investigation, I thought I had made it challenging enough for the class. After watching the students, I believe I could have pushed the investigation to the next level and had a guided inquiry. Next time I believe I will give the students the guiding question, the supplies and see if they can formulate a plan to reach a plan.

I also started the class with a 10 minute video clip on earthquakes to help activate background knowledge. I still like this idea, but I feel that if I would have eliminated this aspect, the students would have had enough time to finish their lab sheets in class instead of having to complete them over the weekend at home.

I enjoyed observing and asking the students open ended questions as they were working on their projects. It is always refreshing to see them engaged in the material.

References:

Banchi, H., & Bell, R. (2008). The many levels of inquiry. Science and Children, 46(2), 26–29.

Laureate Education, Inc. (Executive Producer). (2010). Science inquiry: classroom demonstration. Baltimore, MD: Author.

Sunday, March 21, 2010

Week 3--Question 9

If the polar ice caps melt completely then the Earth has gone through a rapid global warming process. With the melting ice caps, the ocean water levels will have increased causing a change everywhere. Low lying land that was one inhabitable for animals and people, would now be under water. Flooding will have occurred in many places. Plants and animals that were indigenous to cold ecosystems will now struggle for survival. However, most will probably end up going extinct. Also, the fresh water from the glaciers would melt and change the salinity of ocean water. This would also affect the lively hood of many species of coral, tropical fish, and other sea life that require a tender balance of salinity. Most other sea life could not withstand the great swing in pH that would occur in the water. For humans, our food supply from plants to animals would be in jeopardy. With plants becoming extinct our oxygen supply would also be dwindling. So as one can see, if the ice caps were to melt, the entire life as we know it here on Earth would not be the same and we would be looking at becoming extinct like the dinosaurs did when the Earth turned cold.

Other questions:

How could you have students use this experience and relate it to land, plants, animals, etc?

Sunday, March 14, 2010

5 E's Lesson Plan

After completing my lesson plan using the 5 E's lesson format, I realized that I basically do my lesson planning in a similar fashion. However, I think the "5 E" format made me plan in greater detail than I typically would. This format reminded me of the lessons that were required of us to write in our undergrad student teaching program. At the time, I did not understand why we had to write in such great detail. I now know that if you do not have it in your plans, there's a good chance you are not going to get to covering it or asking that particular question. I enjoyed using the "5 E" lesson format and found that even though it was a longer lesson to type up, it took less time to construct the plan.

The lesson I wrote up was one on mitosis. It was a lab where the students would model the stages using Oreo cookies and sprinkles. To activate their background knowledge and build upon that knowledge, a BBK (building background knowledge) activity would be completed prior to the lab. I actually taught this lesson a few weeks ago in my seventh grade class. The students always enjoy doing BBK's regardless of the topic. For the most part, the lesson went well, I had a few students who struggled with the lab. I think it was more about not following instructions than about ability level. I should add that I teach one seventh grade SPED class and three sixth grade classes. There were not any logistical or practical issues with the lesson other than that it took two class periods: one to complete the BBK and one to do the actual lab.