viernes, 19 de mayo de 2017

miércoles, 17 de mayo de 2017

miércoles, 10 de mayo de 2017

jueves, 4 de mayo de 2017

Opaque, transparent and translucent bodies, 5th grade

 Opaque, transparent and translucent bodies, 5th grade

Refraction, 5th grade

 Refraction, 5th grade

domingo, 26 de marzo de 2017

Healthy habits video. 4th grade