Estimation techniques for arithmetic: Everyday math and mathematics instruction

MLA

Levin, James A. “Estimation Techniques for Arithmetic: Everyday Math and Mathematics Instruction.” Educational Studies in Mathematics, vol. 12, no. 4, Nov. 1981, pp. 421–34. EBSCOhost, https://doi.org/10.1007/BF00308140.

APA

Levin, J. A. (1981). Estimation techniques for arithmetic: Everyday math and mathematics instruction. Educational Studies in Mathematics, 12(4), 421–434. https://doi.org/10.1007/BF00308140

Chicago

Levin, James A. 1981. “Estimation Techniques for Arithmetic: Everyday Math and Mathematics Instruction.” Educational Studies in Mathematics 12 (4): 421–34. doi:10.1007/BF00308140.