Tuesday, January 29, 2008
Before the activity, we discussed weight. Yesterday was a perfect example of the importance of assessing prior knowledge from your students before doing a lesson. My CT and I found that most of the students just barely understood the concept of weight, and didn’t know at all HOW to compare the weight of two objects. My CT was trying to get the students to mention a scale as a tool to compare weight measurements; she ultimately asked the kids if they had been to the doctor before and found that the majority in fact hadn’t. This is just one example of how important it is for teachers to know & understand their students, and teach to their level and understandings rather than to a predetermined level that seems “normal” at a certain grade-level. We also discussed bounciness and how it was classified, as well as ability for balls to roll.
For the activity, each pair sat facing each other with their feet touching to form a diamond shape. They were first given a rubber bouncy ball and told to drop the ball a few times from eye level, without force, and to observe the bounciness of the ball. They were also told to roll the ball back and forth a few times, and observe the weight and size of the ball. They then traded the rubber balls for larger poly-Styrofoam ball and did the same thing with that ball. We then went back to the classroom to record data.
The students were given worksheets with the following categories labeled: size, weight, bounciness, and ability to roll. There were two boxes below each category labeled “bigger” and “smaller”, “weighs more” and “weighs less”, “more bouncy” and “less bouncy”, and “rolls better” and “rolls not as well”. The rubber bouncy ball was labeled “1” and the poly-Styrofoam ball was labeled as “2”, and they had to fill in the boxes accordingly. This was a bit difficult for the kids, they seemed confused by the labeling of the balls as “1” and “2”, and it was difficult for them to remember the weight and ability to roll of the balls from the activity, even though during the activity my CT and I walked around and discussed each of these characteristics with each pair. I think this would have worked better if the kids had brought their worksheets into the gym and filled them out as they experimented with the two balls, but it went okay and the kids enjoyed science, which is important, and some kids were able to accurately compare the two balls without simply guessing. I think if the activity were improved a bit it could be successful at this grade level.
Sunday, January 27, 2008
I was really surprised by the video we watched in class relating to science-knowledge of various groups of people in relation to something so common as the difference in temperatures between summer and winter seasons. Strong incorrect beliefs relating to topics science are extremely common, even among well-educated individuals with prior science instruction. It was shocking to hear that only two out of twenty-three Harvard graduates could correctly explain the moon phases and seasons. It is not surprising that student’s personal theories and beliefs outlast instruction and can annihilate what is taught, but it is our job as educators to correct these misconceptions and meaningfully explain WHY things work as they do and WHY their misconceptions can be proved false. Heather, labled as the ‘best science student’ by her 9th grade science teacher, had strong misconceptions of the earth’s orbit-yet 2 weeks later she was able to reverse her misconception, but she still remembered her prior (inaccurate) theory exactly as she described it earlier. Misconceptions relating to science can come from anywhere, but just as often they can originate in class. It is appalling to see that despite proper, thorough instruction, improper beliefs can remain. Additionally, it is unfortunate but not so shocking that despite several continuous years of science instruction, students do not retain their instruction-either because their knowledge is lost or they never learned it. Likely, it needs to be taught more meaningfully; clearly science isn’t taught well right now overall if it is so easily forgotten or misconstrued. It is so difficult for people to overcome their misconceptions because they are often believable and so “sunk in” to their knowledge-people convince themselves of something and it is difficult to change their beliefs, yet it is the job of the educator to overcome these misunderstandings relating to science, and to see that our students are learning the subject meaningfully and that their retention is long-term.
Due to lingering field placement and Martin Luther King Day, I have only been out to my classroom once this semester. I am assistant teaching in a first grade classroom in