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Though
there is much about the concept of number that is distinctly domain-specific,
language plays an important role in both the early development and the
lifelong application of those concepts. Difficult to isolate locally in
terms of effect on number learning at the preschool and early elementary
level, language requirements nonetheless permeate the expectations of
kindergarten and early elementary mathematics standards and assessment/screening
instruments. Furthermore, the very notion that seems to fly in the face
of importance of languagethe much-touted "universality"
of numbershas allowed unique evidence of the profound effects of
language on young children's developing mathematical understandings.
Essential role of language in mathematics: Preparation
for future instruction, impact on validity of diagnosis and assessment,
vehicle for natural processing of ideas in building early understanding
It has been 15 years since the U.S. National Council
of Teachers of Mathematics asserted in the Curriculum and Evaluation
Standards for School Mathematics that "mathematics and literacy
are intertwined" (National Council of Teachers of Mathematics [NCTM],
1989). Actually, mathematics is a language, and reading a mathematics
text is somewhat like reading Homer's The Iliad in its original
(Greek) language. Though solid research evidence remains scant, the importance
of the language of mathematicsoral and print (e.g., reading and
writing)is reaffirmed through research literature review. Martinez
(2001) clarifies reasons for assigning value to learning the language
of mathematics by explaining that we teach and communicate through language,
we use students' oral and written communication to assess mathematics
understandings and to diagnose strengths and weaknesses, and students
process their ideas through language as they build understanding. Insofar
as our reliance on language in teaching and communicating mathematics,
the relevance of the Homer analogy cannot be overstated. Though we hopefully
do not use language nearly as complex with young school-age children,
they nevertheless must be able to read and comprehend the language of
mathematics for their mathematical understanding to progress beyond the
early elementary years. Writing The Iliad could be even more challenging.
Yet, writing mathematically (and with a command of symbols, at least in
the school-age years) is essential for students' progress (Rubenstein
& Thompson, 2002). The Communication process standard in the latest U.S.
national document Principles and Standards for School Mathematics
(NCTM, 2000) underscores this emphasis on communication fluency. A key
point in that document is that mastery of mathematics vocabulary is essential
if a student's ability to speak, read, and write mathematics is to enhance
rather than diminish his progress in developing further domain-specific
understanding. Literature further supports a confluence of perceptions:
vocabulary is essential for communication and extending mathematical understanding
(Raiker, 2002), provides a means for building confidence (Monroe & Orme,
2002), and students are handicapped without it (Miller, 1993). While the
importance of vocabularyespecially oralin the development
of early reading comprehension is well documented (see the k-12 LearningLeads
article Improving
Reading Comprehension: Making the Oral Reading Connection in the Early
Grades), domain-specific meanings in any field pose an added challenge
to educators. Though
not exceptional in this regard, this is an important consideration in
mathematics, where teaching (and teaching with) unfamiliar words is a
given (Schell, 1982), and where mathematical words transferred outside
of the classroom assume a much more ambiguous nature that is detached
from the actual mathematical context in which they typically appear
(Raiker, 2002). Munroe & Orme (2002) reassert the importance of context,
and claim that mathematics instruction encourages the teacher and student
communication that provides the context for learning the language of mathematics.
Vacca and Vacca's (1996) conclusion that most vocabulary words must be
"taught directly and taught well" is partially true, as is the
idea that even in preschool students are certainly capable of dealing
with this instructionby the age of four many preschool children
recognize numerals and are even showing interest in writing them (Althouse,
1994). It's a good thing, because young children are expected to read
and write numerals up to ten by the end of kindergarten (Brigance, 1997),
and this among other language expectations is measured either implicitly
or explicitly through our reliance on vocabulary and language in our diagnosis
and assessment instruments (see below).
Yet, Thompson
and Rubenstein's (2000) concept of "enculturation" with the
language of mathematics bears further thought, especially with regard
to learning at the preschool level. Comparisons of student gains in mathematics
understanding resulting from directive (formal) instruction and nondirective
(informal) learning, though not specifically language-related, showed
little supportable difference (Whitehurst, 2001), and in response, Elkind
(2001) stated bluntly that the whole notion of comparison is overdone
and that both (formal and informal learning) are important. Conversely,
related to vocabulary but not specifically mathematics, it is noteworthy
that highly regarded language and reading specialists (Beals & Tabor,
1996; Dickinson & Smith, 1994; Snow, 1991) find strong correlations between
the young preschool child's vocabulary learning and the opportunity afforded
by informal interaction (e.g., mealtime conversation), around the home
as well as at school or daycare. Finally, though the expertise of the
advocates for strong language-number correlation is unquestionable, and
cannot be discounted, these viewpoints still largely remain just thatviewpoints;
it is very difficult to isolate language variables within a highly pluralistic
society; what children do not share a wide array of language commonalities
(in counting, vocabulary, spatial references, etc.), and what linguistic
characteristics can actually be isolated among test and control groups
with a high degree of validity?
International comparisons: Preschool number concept understandings
across language types
Though
the principles of counting are constant, as with the underlying concepts
of number, we know that the counting words and numeral symbols vary with
the number system and language within which the preschool child forms
their early conceptions of number. Although the variables cannot be completely
isolated, we also know that children from word-rich environments do better
on the above assessments than children from environments where mathematical
vocabulary is more sterile or even incorrect. As well, we see a corpus
of findings that seems to indicate that children's understanding of number
is impacted by differences between linguistic aspects of numeration systems
in different countries, particularly as they relate to the structure of
the number words (their similarity or dissimilarity to the numerals they
represent) and the speed with which they can be spoken. This is especially
evident in studies related to children's understandings of concepts included
in NCTM's Number and Operations standard, most notably in objectives tied
to calculation, where children's use of counting, memory, verbal reasoning,
and base-10 structure awareness are critical to their success.
Number
words in some languages are structured more in keeping with their written
form and the numeration system used. For instance, in Asian languages
12 is spoken as "ten two" and 38 as "three ten eight,"
clearly not the case in most European systems, including English. Findings,
most notably in studies comparing Asian- and English-speaking children,
indicate that children reared in environments where language systems more
closely represent numerical structure develop stronger understanding of
place value and base structure, as well as mathematical computations that
build from these understandings (Fuson & Kwon, 1991, 1992). When numbers
are linguistically organized as structures of tens and ones, place value
seems to becomes part of young children's implicit learning, facilitating
understanding of base-10 structure of two- and three-digit written numbers
before being introduced to tens and ones in school and earlier than their
French-, Swedish- and English-speaking counterparts, both of whose conceptions
are more likely to be based on single units, and who are less likely to
understand individual digits in written numerals (Fuson, Zecker, Lo Cicero,
& Ron, 1995; Miura, 1987; Miura, Okamoto, Kim, Chang, Steere, & Fayol,
1994). Similarly, when performing simple written addition calculations,
Korean children in second and third grades were more likely than American
children to correctly identify "carry marks" above the tens
column as a value of ten, another indication of understanding place value
(Fuson & Kwon, 1992). Interestingly, even with higher structural language-number
congruency than in English, Asian-language number words can be spoken
more rapidly. National differences in number memory span across languages
(Stigler, Lee, & Stevenson, 1986) may possibly be attributed this
phenomenon. Considering also that Asian-speaking children learning to
count have less to memorize structurallythe first nine in sequence
(largest to smallest) rather than 19, and words for powers of ten (e.g.,
ten, hundred, etc.) rather than both powers of ten and decade numerals
(e.g., twenty, thirty, etc.)it may make common sense that Chinese
children have a numerical span that exceeds that of English-speaking children
by 2.6 digits (Geary, Bow-Thomas, Fan, & Siegler, 1993), make fewer errors
speaking number words through 19 than do children in the U.S. (Miller
& Stigler, 1987), and Korean children demonstrate mastery of counting
earlier than their U.S. counterparts (Song & Ginsburg, 1987). When working
with addition calculations in which counting is typically employed, even
with addends (numeral values involved) less than 5, Chinese kindergarten
children solved three times as many addition problems than U.S. children,
and were also more likely to use verbal counting in their solutions (Geary
et al., 1993).
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& Tabors, P. (1996). Sources of support for learning words in conversation:
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the American Educational Research Association, San Francisco.
Dickinson,
D., & Smith, M. (1994). Long-term effects of preschool teachers: Book
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& Kwon, Y. (1991). Learning addition and subtraction: Effects of number
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& Kwon, Y. (1992). Korean children's understanding of multidigit addition
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