UDavid S. une-M.Sc. kusuka eNyuvesi yaseBritish Columbia, Canada, futhi wayengomncane kunabo bonke futhi engomunye wabafundisi ababefunwa kakhulu eNyuvesi ngaphambi kokujoyina i-Reach Out. Ushicilele imisebenzi eyahlukene kumajenali esayensi. Ubeneminyaka ethuthukisa ikharikhulamu eVancouver iminyaka futhi ufundisa i-SSAT, I-SAT, AP, IB, isayensi yezinto eziphilayo, ikhemistri, i-physics, izifundo zezibalo nesayensi. Ngaphezu kwesiNgisi, ukhuluma isiJalimane, IsiSwidi nesiShayina. Unesitayela sokufundisa esijabulisayo nesijabulisayo futhi ukhuthaza abafundi bakhe ngothando lwakhe.