„The latest evidence makes clear that flexible ability grouping is effective, enabling students to make the types of gains all educators should desire and expect.“
Dr. Paula Olszewski-Kubilius, fairfieldmathadvocates.com am 20. Mai 2013
„The latest evidence makes clear that flexible ability grouping is effective, enabling students to make the types of gains all educators should desire and expect.“
Dr. Paula Olszewski-Kubilius, fairfieldmathadvocates.com am 20. Mai 2013