Buoyancy is taught in the series Minds on Physics, and it is included in
many college texts. Actually all common mechanical forces should be part of
the student's toolkit from the time the concept of force is introduced. So
buoyancy should be introduced early on, but not necessarily in detail.
MOP is the only book that to my knowledge does this. They also have
activities where the students have to do ranking tasks which make them think
about all common forces, and which expose common misconceptions about
forces. So one ranking asks about the normal force on various sized blocks.
One is very large, two are large, and the rest are all the same mass. Then
various combinations of springs, strings, tables which bend are used to
explore misconceptions. One in particular puts the block inside an
evacuated bell jar. Students are supposed to recognize that the normal
force then goes up. They studiously avoid the term weight at this point
because it is defined in so many different ways. They also studiously say
ignore buoyancy and air resistance in most problems. So they continually
alert students to its presence.
But it also does fun things like asking how high a block will float in a jar
on the Moon compared to the Earth. This is done before any principles
involving floating objects have been explored.
McDermott has a classic evaluation question involving objects of various
densities most of which are greater than 1, but a couple are less than 1.
Students are asked to draw a picture of them in a bottle of water. They
tend to draw them floating at different levels depending on their density
with maybe one at the bottom. So buoyancy is a known problem with student
misconceptions.