Subtitled in Persianگیمیفیکیشن | گیب زیکرمن | TEDxKids@BrusselsTranslated by Vahid KhoramianReviewed by Sadegh Zabihi
Subtitled in Persian13:31This company pays kids to do their math homeworkMohamad JebaraTranslated by Vahid KhoramianReviewed by Sadegh Zabihi
