Is the Archimedes principle a law of nature? Discussions in an 'extended teacher room'

• Is a suction cup at the bottom of a bathtub subject to an upward force from the surrounding water, even if there is no water under it? A student question, posted in a teacher facebook group on a Monday morning, led to a discussion involving 21 comments with 225 replies offered by 16 teachers during the next few days, including several simple experiments, as well as modeling, to evaluate different arguments. The discussions, summarized in this paper, provide an example of how social media can provide an 'extended teacher room' where teachers can explore and refine their understanding in a safe and mostly supportive environment, and also find ways to give more elaborate answers to challenging student questions.

Ämnesord

NATURVETENSKAP  -- Fysik -- Annan fysik (hsv//swe)

NATURAL SCIENCES  -- Physical Sciences -- Other Physics Topics (hsv//eng)

SAMHÄLLSVETENSKAP  -- Utbildningsvetenskap -- Pedagogiskt arbete (hsv//swe)

SOCIAL SCIENCES  -- Educational Sciences -- Pedagogical Work (hsv//eng)

Nyckelord

Archimedes? principle

buoyancy

extended teacher room

Gauss? theorem

physics teaching

pressure

social media

Publikations- och innehållstyp

art (ämneskategori)

ref (ämneskategori)