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Prof. Dr. Annemarie Fritz-Stratmann is a professor of Educational Psychology as well as the founder and first chairwoman of the Academy Letter and Number.

INTL. HANDBOOK OF MATHEMATICAL LEARNING DIFFICULTIES
HANDBOOK OF MATHEMATICAL LEARNING DIFFICULTIES (GER)
THE HEDGEHOG, WHO WANTED TO KNOW HOW MANY SPINES HE HAD

MEERKAT MATH MEMORY

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