List of Articles happy program Open Access Article Abstract Page Full-Text 1 - Measuring the compliance of the educational content of the Shad program based on approved educational standards in the preschool period bahareh kanani soheila hossainpour fereshte afkari Open Access Article Abstract Page Full-Text 2 - Analysis of primary school students' academic failure with emphasis on the happy learning virtual program in the Corona pandemic toktom jafar tabatabaee ELAHE sarfarazi