TY  - BOOK
AU  - Chow, Jason C. 
AU  - Chow, Jason C. 
AU  - Wehby, Joseph H. 		
TI  - Effects of symbolic and nonsymbolic equal-sign intervention in second-grade classrooms
U1  - DPer 372.05 El262 March-June 2019 v. 119 n. 3-4 
PY  - 2019///
CY  - Chicago,USA
PB  - University of Chicago Press
KW  - Instructional effectiveness
KW  - Symbols (Mathematics)
KW  - Visual aids
N1  - The Elementary School Journal, vol. 119, no. 4, pages 677-702, June 2019
ER  -