free@rss.ponder.catMB to Science Streams@rss.ponder.catEnglish · 1 month agoSphere surface area proof sketchwww.youtube.comexternal-linkmessage-square0fedilinkarrow-up11arrow-down10
arrow-up11arrow-down1external-linkSphere surface area proof sketchwww.youtube.comfree@rss.ponder.catMB to Science Streams@rss.ponder.catEnglish · 1 month agomessage-square0fedilink