Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Diving into buoyancy: exploring the Archimedes principle through
  engineering   In our daily lives, we observe objects sinking, floating, or rising when
immersed in a fluid. The Archimedes principle, which explains an object's
behavior when immersed in a fluid, is important in fluid mechanics; however, it
is a relatively complex concept for middle school students to grasp, as they
often harbor misconceptions. To initiate conceptual change among students
regarding the misconception "heavy objects sink and light objects float," I
created a project during which students build a stable submarine that uses
fluid transfers to move up, down, and forward while carrying a load. Students
must take into account several variables, from the design of the submarine to
the choice of materials. Additionally, students write a report that includes a
user manual, challenges they encountered and how they overcame those
challenges, and a detailed text that links theory to their submarine.

26
The categories of this paper are: bayes-an
7
The categories of this paper are: hep-th
29
The categories of this paper are: funct-an
14
The categories of this paper are: math-ph
12
The categories of this paper are: nucl-th
28
The categories of this paper are: alg-geom
32
The categories of this paper are: atom-ph
15
The categories of this paper are: nucl-ex
36
The categories of this paper are: cmp-lg
33
The categories of this paper are: plasm-ph
4
The categories of this paper are: cond-mat
16
The categories of this paper are: stat
11
The categories of this paper are: hep-lat
34
The categories of this paper are: chem-ph
5
The categories of this paper are: gr-qc
10
The categories of this paper are: q-bio