All are scholarly peer-reviewed journals. Skimming the table of contents is a perfectly acceptable way of doing research. However, try not to have all of your articles from the same one or two journals.
(v. 36, 1997-present). Devotes each issue to a single theme. Articles cover research in all areas of interest and for all levels of education. JSTOR has back issues of Theory into Practice (v. 1, 1962-5 year moving wall).