?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aulast=PUJIASTUTI&rft.aufirst=HENI&rft.au=PUJIASTUTI%2C+HENI&rft.title=JPCS&rft.atitle=Development+of+Teaching+Materials+Based+Interactive+Scientific+Approach+towards+the+Concept+of+Social+Arithmetic+For+Junior+High+School+Student&rft.genre=article