Brief Research Report : Estimation of Exponential Expressions by High School Students  

Oleh:

Mullet, Etienne ; Cheminant, Yves

Jenis: Article from Journal - ilmiah internasional
Dalam koleksi: Contemporary Educational Psychology vol. 20 no. 04 (Oct. 1995), page 451-456.
Topik: estimation; exponential expresion; high school student; estimation

Ketersediaan

Perpustakaan PKPM Nomor Panggil: C15 Non-tandon: 1 (dapat dipinjam: 0) Tandon: tidak ada

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Isi artikel

This study investigated how students with a familiarity with exponentiation in tuitively combined information about bases and exponents in expressions of the type an to estimate the magnitude of these expressions. Three base values (5, 7, and 9) and four exponent values (2, 3, 4, and 5) were combined to create 12 expressions. A student's task was to depict graphically an estimate of the magnitude of each expression. Qualitative and quantitative analyses conducted on the data revealed four different models of magnitude estimation : an exponential model (two subjects), a multiplicative model (14 subjects), and two additive models (19 subjects).

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