کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
918045 1473492 2014 20 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Numerical landmarks are useful—except when they’re not
ترجمه فارسی عنوان
نشانه های عددی مفید هستند به جز زمانی که آنها ندارند
کلمات کلیدی
مقادیر عددی، فراکسیون، نشانه ها، گزارش های کلامی، برآورد کردن، رمزگذاری
موضوعات مرتبط
علوم انسانی و اجتماعی روانشناسی روانشناسی رشد و آموزشی
چکیده انگلیسی


• Whole number landmarks improve magnitude estimates of improper fractions.
• Quartile, quintile, and decile landmarks impede estimation performance.
• Effects of landmarks transfer to magnitudes without landmarks.
• Facilitative landmarks promote adaptive encodings and strategies.

Placing landmarks on number lines, such as marking each tenth on a 0–1 line with a hatch mark and the corresponding decimal, has been recommended as a useful tool for improving children’s number sense. Four experiments indicated that some landmarks do have beneficial effects, others have harmful effects, and yet others have no effects on representations of common fractions (N/M). The effects of the landmarks were seen not only on the number line task where they appeared but also on a subsequent magnitude comparison task and on correlations with mathematics achievement tests. Landmarks appeared to exert their effects through the encodings and strategies that they promoted. Theoretical and educational implications are discussed.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Experimental Child Psychology - Volume 120, April 2014, Pages 39–58
نویسندگان
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