For something I was working on about a year ago, I checked out a library copy of Bix's text Conics and Cubics for a couple of months. I liked the text. Indeed, speaking just for myself, if I wanted to begin learning algebraic geometry, I think I would begin with Bix's text. However, it seemed to me that Bix's text is at the upper level you stated (advanced undergraduate level), and is not really a text that would bridge the gap between high school precalculus and advanced undergraduate level work. Thus, I think the suggestions by Gerry Myerson would be more useful to you.
In any event, perhaps some of the material in the following notes by I. R. Shafarevich could be of use, although they are probably more algebraical/analytical and less geometrical than what would be ideal for your purposes. The last reference is a paper by Joerg Meyer that might also be of interest to you.
Selected Chapters From Algebra, I (22 pages)
http://elib.mi.sanu.ac.rs/pages/browse_issue.php?db=tm&rbr=1
Selected Chapters From Algebra, II (30 pages)
http://elib.mi.sanu.ac.rs/pages/browse_issue.php?db=tm&rbr=2
Selected Chapters from Algebra, III/1 (16 pages)
http://elib.mi.sanu.ac.rs/pages/browse_issue.php?db=tm&rbr=3
Selected Chapters from Algebra, III/2 (26 pages)
http://elib.mi.sanu.ac.rs/pages/browse_issue.php?db=tm&rbr=4
Selected Chapters from Algebra, IV. Primes (20 pages)
http://elib.mi.sanu.ac.rs/pages/browse_issue.php?db=tm&rbr=5
Selected Chapters From Algebra, V. Real Numbers and Polynomials (34 pages)
http://elib.mi.sanu.ac.rs/pages/browse_issue.php?db=tm&rbr=6
Selected Chapters From Algebra, VI. Infinite Sets (34 pages)
http://elib.mi.sanu.ac.rs/pages/browse_issue.php?db=tm&rbr=7
Selected Chapters From Algebra, VII. Power Series (36 pages)
http://elib.mi.sanu.ac.rs/pages/browse_issue.php?db=tm&rbr=8
Projections of the twisted cubic by Joerg Meyer (12 pages)
http://elib.mi.sanu.ac.rs/pages/browse_issue.php?db=tm&rbr=18