Okwu Ndị Na-acha
Okwu na agba bụ ụzọ agụmakwụkwọ nke Caleb Gattegno chepụtara. Okwu na Colour pụtara na 1962, bipụtara n'otu oge na UK na US. E bipụtara nsụgharị ndị ọzọ na French (French: Lecture en Couleurs) na Spanish (Spanish: Letras en Color).

Okwu na agba bụ usoro phonics nke na-eji agba egosi njirimara phonetic nke mkpụrụedemede. A gbanwere usoro ahụ maka ụmụaka ntị chiri, na ụmụaka nwere dyslexic. Okwu na agba bụ otu n'ime ọtụtụ atụmatụ enyemaka agba, nke Colour Story Reading, Colour Phonics System na English Colour Code na-esote.

Hụkwa 

 Ụzọ Na-adịghị ekwu Ụtọ
 Mkpụrụ akwụkwọ nkuzi mbụ
 Phonics
 Lee ka ị kwuo
 Usoro okwu zuru ezu
 Asụsụ zuru ezu

Akwụkwọ 

 Ntuziaka onye nkuzi maka okwu na agba Gattegno.

Ihe odide