Science and Engineering Practices Rethink

Question 1: The 8th grade class writes explanations about why a light source is needed for a person to see an object. In their explanations students provide evidence from an investigation as well as scientific ideas to explain why this occurs.

I answered that this practice was Planning and carrying out investigations. The right answer was actually Constructing Explanations. It is definitely Constructing Explanations because the 8th graders wrote explanations on why a light source is needed for someone to see an object.  They even used the proper ways of Constructing an explanation. They used the data and research they got from their investigation and came to that conclusion. 

Question 2:  After wondering about how the size of a magnet affects the number of paperclips it can pick up, a group of students develops a procedure that answers their question. They gather data and report back to the class.

When I originally answered this question  I said it was using Mathematics and computational thinking. It now after readying it has clear signs of being the correct answer Planning and Carrying out investigations.  First of all lets start they had their investigation with testing to see if the size of the magnet effected the amount of paper clips. They even planned it out by having a prompt question going into the investigation. They carried out the investigation by gathering up this data and reporting back therefore completing and answering the question the investigation prompted. Also on top of that they created a procedure to accurately be able to test this kind of investigation.

Question 3: Students in Mrs. Garcia's class use a class chart of what different animals eat and group the animals in different ways based on their food sources. Students then discuss which animals would be affected if changes occurred to different food sources.

When originally answering this question I thought it was Developing and using models. Now clearly I can see it was most definitely  Analyzing and Interpreting data.  First of all the students created a list of the different animals and groups and what they eat. This is not quite a model since a model is organizing a set of data and this is not as much of that. The students did however use the things they wrote to understand the effect of the changes in different food sources. They looked at the list Interpreted that these different facts, foods, and animals had to do with each other. They looked at relationships through analyzation. This makes it pretty obvious that Analyzing and Interpreting Data is the best answer.

Question 7: 
In science class, a group of students builds prototype for a magnetic levitation train and then use it to explain how forces interact to keep the train elevated.

Even though I answered that it was  Constructing explanations it now clearly is Developing and using models. The group of students created a magnetic levitation train as a somewhat simulation for why  forces interact with the trains continuous levitation. All the boxes seemed checked. First they had a discovery such as the relation between force and the train. Then they picked a model to best represent this such as a model magnetic levitation train. Then It explained their thinking. 

Question 8
A group of 7th graders creates and analyzes graphs of the data from an investigation about the relationship between a ball's mass and its speed down a ramp.

Originally I answered Analyzing and Interpreting Data but now after seeing the answer I can tell it was actually Using mathematics  and computational thinking.  First of all the students used math by comparing the balls mass to speed down a ramp. This requires very specific mathematical equations. They also used and created a graph to organize the math and conclusions they came to. That's why this is Using Mathematics and computational thinking.