8 3 . ▁After ▁serving ▁Camp ▁Fire ▁youth ▁cam ps ▁in ▁An ch orage , ▁Al aska , ▁followed ▁by ▁ski ▁l odge ▁customer ▁service ▁at ▁Mill ers ▁Inn , ▁Winter ▁Park , ▁Colorado , ▁he ▁returned ▁to ▁the ▁University ▁of ▁Iowa ▁for ▁gradu ate ▁study , ▁cred ent ia led ▁in ▁science ▁education ▁( bi ology ) ▁in ▁ 1 9 8 5 . ▁From ▁ 1 9 9 0 ▁to ▁ 1 9 9 2 ▁W eld ▁purs ued ▁a ▁master s ▁in ▁bi ology ▁at ▁the ▁University ▁of ▁Missouri - St . ▁Louis . ▁He ▁completed ▁a ▁master ' s ▁degree ▁in ▁Science ▁Education ▁at ▁the ▁University ▁of ▁Iowa ▁in ▁ 1 9 9 4 . ▁In ▁ 1 9 9 8 , ▁W eld ▁completed ▁the ▁doctor al ▁program ▁in ▁Science ▁Education ▁at ▁the ▁University ▁of ▁Iowa ▁under ▁John ▁Pen ick ▁and ▁Robert ▁Y ager , ▁empir ically ▁resol ving ▁extr insic ▁reward ▁effects ▁on ▁science ▁teaching , ▁while ▁ear ning ▁compet encies ▁in ▁e col ogy ▁for ▁work ▁in ▁pred ator - pre y ▁aqu atic ▁population ▁reg ulation , ▁and ▁end ocr in ology ▁for ▁work ▁on ▁molt ▁h orm one ▁synth esis ▁in ▁Can cer ▁anten n arius ▁ ▁Career ▁ ▁Dr . ▁W eld ▁res umed ▁the ▁position ▁of ▁Executive ▁Director ▁for ▁the ▁Iowa ▁Governor ' s ▁S TE M ▁Ad vis ory ▁Council ▁on ▁December ▁ 1 1 , ▁ 2 0 1 8 . ▁From ▁December ▁ 1 1 , ▁ 2 0