ations ▁of ▁Eth iop ia ▁Category : Middle ▁Stone ▁Age ▁Category : P ale o anth rop ological ▁sites ▁Category : P le ist oc ene ▁Series ▁of ▁Africa ▁Category : Arch ae ological ▁sites ▁in ▁Eth iop ia ▁Category : P ale ont ology ▁in ▁Eth iop ia ▁Category : S and stone ▁form ations ▁Category : T uff ▁form ations ▁Category : L ac ustr ine ▁depos its ▁Category : Delta ic ▁depos its ▁Category : A far ▁Region ▁Category : A w ash ▁River <0x0A> </s> ▁Barbara ▁Ann ▁Oak ley ▁( née ▁Gr im , ▁November ▁ 2 4 , ▁ 1 9 5 5 ) ▁is ▁an ▁American ▁Professor ▁of ▁Engineering ▁at ▁Oak land ▁University ▁and ▁Mc Master ▁University ▁whose ▁online ▁courses ▁on ▁learning ▁are ▁some ▁of ▁the ▁most ▁popular ▁MO OC ▁classes ▁in ▁the ▁world . ▁She ▁is ▁involved ▁in ▁multiple ▁areas ▁of ▁research , ▁r anging ▁from ▁S TE M ▁education , ▁to ▁engineering ▁education , ▁to ▁learning ▁practices . ▁ ▁Oak ley ▁co - created ▁and ▁taught ▁Learning ▁How ▁To ▁Lear n : ▁Power ful ▁mental ▁tools ▁to ▁help ▁you ▁master ▁t ough ▁subjects , ▁the ▁world ' s ▁most ▁popular ▁online ▁course . ▁It ▁is ▁available ▁on ▁Cour ser a . ▁She ▁also ▁wrote ▁a ▁book , ▁A ▁Mind ▁For ▁Num bers : ▁How ▁to ▁Excel ▁at ▁Math ▁and ▁Science ▁( E ven ▁If ▁You ▁Fl unk ed ▁Al gebra ). ▁ ▁This ▁is ▁a ▁stand alone ▁book , ▁though ▁it ▁compan ions ▁the ▁ideas