Session S63b (Wednesday, 2pm, Wartik 107)

P810: Making visible the organization of the periodic table

Jodye Selco (Cal Poly Pomona, USA)

Chemistry is difficult to learn because it is impossible to actually “see” what happens at an atomic level.  Newly developed atomic models that have all valence electrons are used by students to make molecules and compounds (both covalent and ionic) by connecting unpaired valence electrons.  Examining the numbers of different atoms within the compounds results in learning how to write chemical formulae.  Students then organize atomic models onto portions of a periodic table, starting with main group elements. Seeing the atoms on the periodic table makes visible the organization of the periodic table, and shows why the chemistry of elements within a family are similar. This helps students learn to “read” the periodic table and predict combining ratios for main group elements. This exercise is effective with students ranging from elementary school through university level as demonstrated by district-wide benchmark exams, the state-wide California Standards Test, and student comments.


A sample text widget

Etiam pulvinar consectetur dolor sed malesuada. Ut convallis euismod dolor nec pretium. Nunc ut tristique massa.

Nam sodales mi vitae dolor ullamcorper et vulputate enim accumsan. Morbi orci magna, tincidunt vitae molestie nec, molestie at mi. Nulla nulla lorem, suscipit in posuere in, interdum non magna.