Tuesday, October 11, 2011

School of the Wild

I participated in the wetlands portion of School of the Wild. I was working with Chad. He really made the experience enjoyable for me because of his immense knowledge of the area we were walking around. He said he had been doing tours and working through the University of Iowa Recreation Services and has been doing so for 9 years now out at Macbride. He had a great activity for the kids when we first started. We were going to another area of the park and he wanted to make sure that he could trust the students he was working with on the canoes because they would be using the canoes on Spider Pond in the afternoon. The activity involved him grabbing some life jackets and tying them tight. He then had everyone stand in a circle and had each student say their name. Then he would toss multiple life jackets to students but would say their name before he did it. The students would repeat the process. The whole point was so Chad could learn their names and also so they could practice not being so loud and excited out on the trail because he said he didn’t want our big group to “Scare the nature away.”

Then we went out on a pontoon and we were split in two groups because we didn’t all fit. So I used my activity (attached), which helped occupy our time. Chad picked us up while the other group was at the new sight waiting and we learned all about the depth of the lake and the changes that the community has made to help preserve it. We then walked a trail to Prairie Pond, which was completely dried up. Chad mentioned that there were a lot of organisms in the pond worth researching but since it was dried up we didn’t investigate it. The knowledge he told us about the prairie at this time was very interesting though. He mentioned that prairie grass doesn’t die easily because its roots go down on average thirty feet. He then told us about the sediment and water table that paired with the roots was a natural filtration system. I found this very interesting.

After looking at the dam that the community and park members had created to keep from shore erosion and flooding we went to Duckweed Pond. At this pond the kids were instructed to search for organisms with nets and one kid caught a small turtle and another kid caught a leopard frog. Chad had an immense amount of information about the both of them as well. He also explained about methane bubbles underneath the mud on the pond floor so kids wouldn’t think that there was constant air bubbles from animals.

I didn’t really understand that environmental education had branches such as conservation and outdoor education. I assumed environmental education was about nature and how we can keep it from being destroyed.

When the article said that environmental education is not only science but also “economics, math, geography, ethics, politics and other subjects.” I guess I don’t fully agree on these. I understand each of them but I feel that some of them are loosely associated with environmental science. I understand that sometimes it gets destroyed for economic purposes and numbers are involved when people fight over it [politics] and some people will think it’s terrible or not terrible [ethics]. But this is only if something gets torn down or is argued to be torn down for buildings or factories or something. I ‘m not sure that it is much more than science and geography, in my opinion.

I do agree with experiential learning. While many subjects that people take in college require a lot of preparation in the classroom before they go out in the world it makes sense that those interested in environmental studies get outside and experience it right away. Obviously knowledge of what you’re getting into would be good also but I do agree that you’re not going to learn as much if you’re just sitting in a classroom.

All in all I have no complaints about environmental science. I think it is very important but also broad. I want my students to believe that they are helping the community when they see trash in the grass and they pick it up and throw it away. I guess I’m struggling to decide, (besides a hike or nature walk or some sort of else outdoor activity) what is the best way to teach them about environmental science besides saying that littering is bad.

Nature Activity

In this nature activity, hawks birds present a fun challenge to the children.

When a bird hawk is hunting, the birds that survive are the ones that are most aware of danger. At a young age either they learn to scatter into the trees or back into the nest, or they become lunch for a bird of prey.

This is a fast moving game that children love. It is a good one to play with large groups, although it can also be used with groups as small as four or five.

Working with the 6 to 9 year olds at Spruce Pine Montessori School, we shaped it to a version that we liked, giving our hawks and birds a lot of freedom to interchange.

Start the game with one or two hawks. Everyone else is a baby bird. The bird’s “nest,” or safe place, is a bandana or other object placed on the ground. Make as many nests as necessary so that the birds are not too crowded.

The game begins when the baby birds leave the nest to find food. Then the hawks began to fly around the birds. When they raise their “wings” (arms) they begin the hunt.

When the baby birds see the hawks hunting they must get back to their nest or be killed (tagged) by the hawk. Once in the nest they must practice being still and quiet. If the hawk sees movement or hears noise, it can tag the bird and the bird dies.

“Dead” birds become hawks in the next round so that no one has to sit out.

If a hawk does not catch a bird in three rounds, then it “dies” and becomes a baby bird.

Helpful hints:

1. Hawks are not allowed to touch the birds in order to make them move.
2. Hawks are not allowed to hover over a bird. They must continue to fly.
3. Baby birds must leave the nest if hawks are not hunting.
4. Limit each round to 30 to 60 seconds.

Resource:

Courtesy of http://www.outdoor-nature-child.com/nature-activity-hawks-birds.html

Tuesday, October 4, 2011

Pendulums

What is your personal experience with swinging on anything like a trapeze?
- Probably just swinging on a swing or just swinging on monkey bars when I was a little kid. I used to jump off of the swing when I got as high as possible.

What application to "real life" do swinging objects have?
- Grandfather clocks, swing sets, trapeze

What is your prediction about what will happen if two people are on one trapeze and only one is on the other and the one person switches to the other? Explain (in terms of mass)
- The mass will not necessarily be the same when the person switches. The other person on the trapeze may be heavier than the one on the previous trapeze. Depending on momentum the trapeze that inherits the new person may gain speed or more forward motion while the trapeze that loses the person may slow down due to lack of mass being forced in opposite directions. This is trivial though because it depends on if each trapeze is pumping their legs and other things to help propel it forward and backward.

What understanding or ideas do you have about the science of back-and-forth swinging objects?
-My understanding is that unless something is propelling it back-and-forth the idea is that the object will slow down and eventually stop. The amount the object moves in each direction also depends on the mass of the object and the distance from its stationary point to the object itself (example: the distance of a swing's chains in relation to where you sit).

BB&W Reflection and Lesson

I found Ms. Stone's lesson to be very teacher centered. It was a lot like my experiences were in elementary school. When I relate it to the exact lesson we used in science class last week I believe that that lesson was related a lot more to Ms. Travis' lesson. It was clear that Ms. Travis had a student-centered approach because she gave the kids the tools and asked them to write their findings. She didn't give direct instruction like Ms. Stone. Ms. Stone gave absolutely no room for error for the students and no exploration. She also, by using her teaching style, gave no reasons or explanations for how it works. She explained parallel circuits and so on and while I understood it, I can see kids walking away from that lesson not understanding exactly how it works and even worse the lesson would not have any of their own personal influences.

Lesson:

My lesson would reflect Ms. Travis' because I want kids to discover their own data and then be able to explain it. I would have the same materials that Ms. Travis had and I would add some as well. I'm really interested in water electricity so this would be a perfect opportunity for me to follow along and learn with my kids at the same time. First I would do research on water electricity and maybe incorporate in what settings it is used such as water wheels and so on. I have found an experiment online that I could use the same materials plus beakers, tape, and nails that are accompanied with the water. I would take the same approach as Ms. Travis and ask kids how they think they could light a bulb using the materials given to them. Do they think water can transmit electricity? If they do can they show me using the materials given? If they don't think so can they tell me why? (From here they would just go into having the bulb light without using water). All of these are possible scenarios and they can explain themselves by using the materials and trying to find a way to light the bulb. Here is my resource... http://www.pge.com/microsite/safety_esw_ngsw/esw/hurt/exp_water.html

Engage: The teacher gives students materials and asks the question: Do you believe water can help in the creation of electricity? If you do you can use the materials in front of you to try and show that it does. If you don't you should explain why not and we'll move on from there. TEACHER CENTERED- the question has been posed by me and I am creating the jumping off point for the kids to think.

Evidence: The learner, using the question, now investigates based of their initial prediction if they predicted correctly through trial and error using the materials. STUDENT CENTERED- the learner chooses how to manipulate materials and collect data.

Explain: Students formulate explanations from their own trial and error and interpretations of that. STUDENT CENTERED- gives students to elaborate on their findings and tell how it worked or have them justify why it didn't work.

Evaluate: Students research outside of the initial experiment to find explanations on why their initial ideas worked or didn't work. STUDENT CENTERED- students are independently researching and comparing to their data to evaluate their own thinking.

Communicate: Students explain their findings to classmates. STUDENT CENTERED- students can choose to pair their findings, along with their predictions and research to explain how they accomplished to light the bulb and why it works.