TY  - BOOK
AU  - Corwin, Rebecca
ED  - (TERC) Technical Education Research  Centers, Inc. for the California Department of Education 
TI  - Seeing fractions a unit for the upper elementary grades
SN  - 801109264
SN  - a
U1  - 513.2 C8193s 1990 
CY  - California: Technical Education Research Centers,inc., 1990
ER  -