00410nam a2200145Ia 450000500170000000800410001702000200005808200160007810000170009424500970011126000200020830000080022865000140023665000140025020260404161502.0260404s9999    xx            000 0 und d  a978-103-2462035  a370.15bHAT  aHattie, John 0aVisible Learning : The Sequel A Synthesis of over 2100 Meta-Analysis Relating to Achievement  bRoutledgec2023  a497  aDidactics  aPedagoggy