McTear thong qua mcM cirng trinh nghien ciru nho eua minh dua vao vic}c ghi lai ngim ngCr sir dung trong cac IcVp here tieng Anh danh eho khoa hge va cong nghe ngim ngCr sir dung trong cac IcVp here tieng Anh danh eho khoa hge va cong nghe (EST). Sau do hg dem ra phan tieh va so sanh viri ngcm ngir khoa hoe \a ec)ng
nghe sir dung thuc a ngoai dcri. Phillips & Shettlesvvorth (Ibid.) kk luan ring
kbong nbirng kieu ngon ban duge san sinh trong lcrp hgc co r4t it m6i quan he vcri ngon ngir hay nhung each sir dung giao tiep trong cac tinh hu6ng khoa hge thuc thu ma tham chi con khac vcri nhirng quan niem cua giao vien ve kieu ngon ban dugc san sinh. Duong nhu chinh vi sir khac biet giijra giao ti^p trong Icjp hgc vcri giao tiep thuc a ngoai dai nay la nguon goc cho hai quan diem phat trien tu lieu giang day: quan diem dorn gian hoa tu lieu dau vao va quan diem giix nguyen tu lieu dau vao (tu lieu dich thuc) ma chimg toi se trinh bay ducri day.
I r o n g phat trien tu lieu giang day ngoai ngir, tir lau nguoi ta thucmg cong nhan rang li tucrng nhat la nen phat trien no tren co so sir dung tu lieu dau vao dieh thuc. Tuy nhien. gicrng nhu rat nhieu van de khac trong ITnh vuc day ngoai ngir, van de phat trien tu liclm giiing day trCm nhirng tu litiu dich thuc da bi phan ra thanh ba ducrng hucrng khiic nhau: (1) ngucri phat trien tu lieu giang day tu viet tu lic^u dau
vao \ a thic}t kc ciic boat di)ng hgc tap, (2) ngucri phat trien tu lieu giang day lira
chon lu lieu dim \'ao dieh thue va cai bien hay dcrn giim hc')a nc) trong qua trinh
phat tnen e;ie hoat dbnv, hgc tap, \ a (3) m^uo\ phiit trien tu liiru giang day lira chgn lu lic}ii dAU \i\o dieh thue \ a giir nguyen no trong quii trinh thiet ke eae hoat dgng hoe tap Dirimy hucrng phat tnen tu \\eu giang da\ thu nhiil ducrng nhu khong con
tc")n tai hoae neu eo thi ni) chi tc)n tai trong nhirng khoa hgc rat ngan cho nhirng
nguivi mo\ hoc. llai ducrng hucrng phat trien tu \\eu giiing day sau hien dang thinh
hanh \ a la trgng tiim thao luan eua ehung ti)i trong nhirng phan duoi day.
Nua\ na\ nhieu ^iao vien co trinh do li thuvet nao do ve phat trien tu lieu
giiing da\ earn thii\ khc^ng thoa man hoac tham chi con cho la sai lam khi sir dung nhirng hc;)i thoai ha\ nhirng ngi)n ban (bai khoa) dugc bien tap lai hoac dugc bien soan theo kieh han eo sim. Ilg cho riing nhirng ngon ban nay la nguy tao va khong tu nhien; ehune eo \ii hucme bi mill di nhirnu dac diem eiia mgt ngon ban ban dicn