Da: liu xing, Nanjing, JS, Cina
paperback. Condizione: New. Language:Chinese.Paperback.Pub Date:2021-01-01 Pages:160 Publisher: Tsinghua University Press Some children have low calculation accuracy. slow speed. and carelessness. The root cause is that they do not have a good number sense basis.?Before learning addition and subtraction. you must know the relationship between numbers within 10. the difference between perceived numbers. and understand what is more and less in the mathematical sense.?This book Spark Number Sense Grading and Training Level. Codice articolo NV031576
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