Approximate multiplication in young children prior to multiplication instruction
نویسندگان
چکیده
منابع مشابه
Nonsymbolic, approximate arithmetic in children: abstract addition prior to instruction.
Do children draw upon abstract representations of number when they perform approximate arithmetic operations? In this study, kindergarten children viewed animations suggesting addition of a sequence of sounds to an array of dots, and they compared the sum to a second dot array that differed from the sum by 1 of 3 ratios. Children performed this task successfully with all the signatures of adult...
متن کاملLectures 1 and 2 Matrix Multiplication and Matrix Inversion 1 Prior Work on Matrix Multiplication
There has been much effort to improve the runtime of matrix multiplication. The trivial algorithm multiplies n×n matrices in O(n) time. Strassen (’69) surprised everyone by giving an O(n) time algorithm. This began a long line of improvements until in 1986, Coppersmith and Winograd achieved O(n). After 24 years of no progress, in 2010 Andrew Stothers, a graduate student in Edinburgh, improved t...
متن کاملON COMULTIPLICATION AND R-MULTIPLICATION MODULES
We state several conditions under which comultiplication and weak comultiplication modulesare cyclic and study strong comultiplication modules and comultiplication rings. In particular,we will show that every faithful weak comultiplication module having a maximal submoduleover a reduced ring with a finite indecomposable decomposition is cyclic. Also we show that if M is an strong comultiplicati...
متن کاملSigned multiplication technique by means of unsigned multiply instruction
The present work aims at proposing an efficient technique for signed binary multiplication using unsigned, multiply instruction. Numerous examples are provided to show efficiency of the proposed approach in the context of practical software implementation. Performance of the technique is compared to the software emulated versions of classical methods, such as radix-2 Booth method, reversal of s...
متن کاملInstruction sequence expressions for the Karatsuba multiplication algorithm
The Karatsuba multiplication algorithm is an algorithm for computing the product of two natural numbers represented in the binary number system. This means that the algorithm actually computes a function on bit strings. The restriction of this function to bit strings of any given length can be computed according to the Karatsuba multiplication algorithm by a finite instruction sequence that con...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Experimental Child Psychology
سال: 2021
ISSN: 0022-0965
DOI: 10.1016/j.jecp.2021.105116