https://padlet.com/francescadelgado1015/nsf7dv1cbz350gs5 en-us 2020-11-04 21:23:08 UTC 2020-11-05 05:03:50 UTC hello@padlet.com francescadelgado1015 https://padlet.com/francescadelgado1015/nsf7dv1cbz350gs5/wish/891933410 Going into detail on the conceptual aspect of density (without using the term yet because the vocabulary may intimidate them) will hopefully allow them to understand the relationship between mass and volume and how that affects ability to float/sink. I could use terms such as "compactness" or "tightly arranged molecules" to explain the concept in a different way that may alter their understanding. After all of this, showing them the formula for density will be eye-popping, relating their already understood connection between mass and volume from the experiment to an already existing equation.]]> 2020-11-04 21:23:08 UTC https://padlet.com/francescadelgado1015/nsf7dv1cbz350gs5/wish/891933410 francescadelgado1015 https://padlet.com/francescadelgado1015/nsf7dv1cbz350gs5/wish/891933412 Using objects that conflict with their current thinking will be the most beneficial, which in this case was using a huge sponge (something really large in volume that still floats) and a small piece of steel (something really small that feels light but still sinks) as opposed to giving them a large hunk of heavy metal and a small wood chip, which would only concur with their previous knowledge and make the lesson targeting this misconception useless.]]> 2020-11-04 21:23:08 UTC https://padlet.com/francescadelgado1015/nsf7dv1cbz350gs5/wish/891933412 francescadelgado1015 https://padlet.com/francescadelgado1015/nsf7dv1cbz350gs5/wish/891933418 Students sometimes do not fully understand the conceptual aspect of density. Often students find themselves believing, "If something is heavy it will sink in water, and if it is light it will float." They also associate size (volume) with ability to float.
This misconception I believe is very common because there are situations where something that feels heavy can sink and something that feels light can float as well as situations where something big sinks and something small floats. Intuitively, they think that common sense and prior knowledge tells them that these patterns apply to everything, so when presented with an unknown, they will pull from that past experience and erroneously believe that "heaviness" and "size" are the sole factors.]]> 2020-11-04 21:23:08 UTC https://padlet.com/francescadelgado1015/nsf7dv1cbz350gs5/wish/891933418 francescadelgado1015 https://padlet.com/francescadelgado1015/nsf7dv1cbz350gs5/wish/891933420 Since they may be flabbergasted at this point with the wood floating, the small piece of steel sinking, etc, students will add to the "W" and "L" sections of the KWL based on what they observed in the lab experiment. The W will be for what they are confused about, and the L will be for them to jot down what they think they just learned from the experiment. This may still be false information, but a class discussion and teacher instruction should help! See next column for that.]]> 2020-11-04 21:23:08 UTC https://padlet.com/francescadelgado1015/nsf7dv1cbz350gs5/wish/891933420 francescadelgado1015 https://padlet.com/francescadelgado1015/nsf7dv1cbz350gs5/wish/891933424 Five objects will be on a table in the front of the class. These would include a large block of wood that feels heavy, a penny, a small cube of steel that feels light (from how small it is), a medium-sized piece of steel that feels in the middle with respect to "heaviness," and a really large sponge. Students will come up and observe/feel the objects then on a sticky note anonymously write which ones will sink/float in water and a very brief justification. They will post it on the board. This will be a great way to see where the students' heads are at and the various misconceptions these students may possess.]]> 2020-11-04 21:23:08 UTC https://padlet.com/francescadelgado1015/nsf7dv1cbz350gs5/wish/891933424 francescadelgado1015 https://padlet.com/francescadelgado1015/nsf7dv1cbz350gs5/wish/891933426 I would obtain a rather large tub of water and one set of the five objects per group of students (4-5) to work together and use. The students would decide on which item to place first into the water and record their predictions on a sheet of paper, perhaps a lab worksheet of some sort. The students would then grab the objects and place them one-by-one into the water, recording their predictions and observations for each object.]]> 2020-11-04 21:23:08 UTC https://padlet.com/francescadelgado1015/nsf7dv1cbz350gs5/wish/891933426 francescadelgado1015 https://padlet.com/francescadelgado1015/nsf7dv1cbz350gs5/wish/892273099 At this point we would have a class discussion with students describing what they observed (i.e. what floated and what did not), and where they think maybe they went wrong in their previous thinking and/or how maybe this thinking has changed (I understand there will still be some incorrect explanations here, but just to see where their heads are at and see if any of the students revised their thinking). I would also have the students who predicted it correctly share their reasonings to the class. This would show if maybe they just got lucky and still have misconceptions or if they actually know what they are talking about.]]> 2020-11-05 00:24:13 UTC https://padlet.com/francescadelgado1015/nsf7dv1cbz350gs5/wish/892273099 francescadelgado1015 https://padlet.com/francescadelgado1015/nsf7dv1cbz350gs5/wish/892280280 The students will create a KWL chart where they will put what they think they know under K, what they would want to learn under W, and leave the L blank for now. The sticky note brainstorming warm-up will get their gears turning and allow them to at least put some information in the K and W of the KWL. ]]> 2020-11-05 00:28:21 UTC https://padlet.com/francescadelgado1015/nsf7dv1cbz350gs5/wish/892280280 francescadelgado1015 https://padlet.com/francescadelgado1015/nsf7dv1cbz350gs5/wish/892327492 https://www.apa.org/education/k12/misconceptions

https://newyorkscienceteacher.com/sci/pages/miscon/chem.php]]> 2020-11-05 00:52:23 UTC https://padlet.com/francescadelgado1015/nsf7dv1cbz350gs5/wish/892327492