TY  - GEN
TI  - Mathematics: structure and skills 
U1  - 510,DEN 
PY  - 1970///
CY  - California
PB  - Dept of Education
KW  - Mathematics
N1  - Numeration Systems (Page-1), Number Ideas and Patterns (Page-55), Numbers of Arithmetic (Page-115), Geometry (Page-177), Introduction to Integers (Page-227), Number Phrases and Sentences (Page-275) Congruence (Page-321), Rate Ratio and Percents (Page-371), Extending Number Systems (Page-417)
ER  -