#paywallsUnmoderated tagAll postsTrending CommunitiesSteemitCryptoAcademyNewcomers' Communityআমার বাংলা ব্লগKorea • 한국 • KR • KOSteem POD TeamSTEEM CN/中文Steem AllianceAVLE 일상WORLD OF XPILARBeauty of CreativityUkraine on SteemTron Fan ClubExplore Communities...#paywallsTrendingHotNewPayoutsMutedleguna (78)in #paywalls • 4 months agoMy biggest problem is that the stuff that we pay for has displaced equivalent or better stuff that is free.I used to be able to for example pull up sample tests in math and science that teachers and volunteers had just put up…phoenixwren (65)in #science • 7 years agoJust Sharing A Cool Science ResourceIf you're like me and you like to read the source studies referenced in popsci articles, or you're a student doing…