"Las matemáticas son una ciencia exacta salvo cuando te equivocas." Jaume Perich


martes, 14 de febrero de 2017

Revise the unit 6 by solving the exercises of the worksheet

martes, 7 de febrero de 2017

Revise the unit 6 by solving the exercises of the Worksheet 6
Revise the unit 4 by solving the exercises of the worksheet4