The first big experiment we did in “Diversity of Life” was an experiment on living things.
We also did a writing piece called “How am I Alive” and I chose to be a sparrow. I learned a lot of how things are classified in living kingdoms. I also designed and built a handicapped ramp, in which I built using an inclined plane. I learned how math is used to make sure the ratio of steepness is not too high. This is my reflection:
Use the questions below to reflect on your learning on the task: “Building a Handicapped Ramp” When you’re done, paste the questions, your responses and media (pictures I send you) in your blog. Write a lengthy paragraph and use your peer evaluations to help you with this.
How successful were you in designing a ramp that complied with the American’s with Disabilities Act and the space constraints? If you were not successful, what would you do differently?
I think I was successful in this lab because I showed how much I know of finding the AMA and IMA and I also showed progress throughout my lab showing everything I know in a commercial. I think I would rate myself 9.5 out of 10 because I know I wasn’t perfect on this ramp assignment but I think I have to give credit to myself for doing the best I could.
How did evaluating the designs and work of others help them? How did evaluating your peers help you understand the problem better?
I think I learned that there were different kinds of ramps you could make just having to have a IMA of 12 or over and that the height had to be lower than 2 meters. I have learned of evaluating David’s and Victoria’s that you could add support under your ramp to make it more stable. So throughout the process I added a lot paper and a lot of tape to make it stable. It may not look perfect because of the tape and crinkled paper everywhere but I think I tried my best of showing how much I know about designing ramps.
How did conducting “tests” on other people’s ramps (IMA and AMA) help with data collection and analysis?
I learned that how to get the IMA and IMA without friction, AMA, and AMA without friction better by doing it again and again and help do the peer-evaluation. It also helped me by understanding how you can get the IMA of 12 or more in different ramps by seeing different ramps by different people.
Did you change your model throughout this process? Why?
I did have one thing I changed which was crinkling paper underneath my ramp to make it stable enough for the wheelchair to not fall. I think that I did the right thing to put paper underneath because if I did not the wheelchair would fall down everytime I try to finish my calculations and my IMA and AMA would not be exact.
In second semester, I did an experiment on “solutions” and I wanted to see if evaporation affected crystal size. I think this is when I really understood the concepts of variables, but I forgot to include an evaluation, so I’ll be sure to do that. We finished by building a distillation apparatus to purify water. I learned a lot about percentages. This is my reflection:
Design Build. How did testing improve your design? For instance, how did it hold up under heat and water moisture? How well were you able to “build” your picture and what did you learn from building this with the materials provided?
Testing really improved our designs because the first time we tried our plastic cup couldn’t handle the heat and melted, so the next time we learned from our mistakes and used paper cups which worked well. We were pretty successful in building our drawing we sketched on the first try but after trying it out we found out better ways to improved the design. I learned from building this with the materials provided that it can be challenging if you don’t exactly know how it can affect your design as an example again, plastic cups can’t hold the heat and that if you use cardboard somewhere in your design where the water drops out it soaks up the water and it is challenging to get it bac.
Apply Concepts. The Law of Conservation of Mass says no mass is lost or gained in any change of state. How can you account for such little water being collected after distillation? Where did the rest of it go?
I think the rest of the water evaporated during the evaporation or heating stage because if you don’t cover every hole entirely the steam comes out which is the same thing as losing water. So in other words losing water in a gas form. We tried covering every hole we could but the steam found it’s way out and there was nothing we could do about after it was out of the pan so I think on our next trail that we have to be really strict about covering every little hold we can so the steam can’t find it’s way out. I think we were pretty successful in covering most of the holes but I think that we could have done better which means I would rate us a 3 out of 5 because honestly I think we could have tried harder and gave it our best. Though it was hard because we couldn’t use any tape on the pan because it might burn we tried new ways we also worked fine.
Design Analysis. How successful was your group at water distillation? (Include 2. graphs of % of water collected and price per milliliter.)
I think that we were pretty successful as a group on the third trail of water distillation. I think this because we collected the most water and because it wasn’t our highest price per milliliter which was a good thing. It might have not been our lowest price per milliliter but I was very happy that is wasn’t, certainly out highest.
Prove. Share your groups % of water collected and price/ml AND explain how to calculate these amounts to support your success/failure.
Trial1 : 0.8% water collected and 48 cents is the price per milliliter. I think we could have done better by looking again if there were any holes that could make the gas leak but for the first trial I think that we did pretty good. For the third trial we got 4.80% of the water which was 4% more which is way better. But the price per milliliter got higher. It was $1.50. Which might be a lot more than last time but it is not the highest we got, so I think that we did pretty good. I think that we could have done better by getting a lower price per milliliter but I still think we got a lot more than the first trial. We got the price per milliliter by dividing the amount of collected and cost. To find the price per ml you just have to divide the amount collected to the cost. How you calculate the % of water collected is also very simple. All you have to do is divide the amount of water you have with the total amount (amount of water you started with) and then times it by 100.
Analyze. How successful was your apparatus in reducing pollutants. Use specific examples.
We were very successful in reducing pollutants. We worked very good as a team and we finished it all on time and put our data in on time too. We were very successful for a lot of reasons but the most important one was that we worked together as a team. We took turns doing the job to make everyone participated, and we followed the steps very carefully. We split the job. I read it, Antonio kept the data, and finally San and Bob did the procedure. It was very well organized which helped us concentrate better and get the job done on time. We also was very organized which helped us finish the data and put it on the form on time and we also were very concentrated which gave us some spare time for us to finish our reflection. We did have a bump in the road because we could tell if we were suppose to go on or not but we solved it. We looked at the mixture again, re-read it, and at the end we figured it out. So overall I would rate our successfulness a 4.8 out of 5, because of various reasons. Which I believe means we were pretty well done and it seemed like we were pretty well prepared for any challenges might have come.