The Materializecss
has the following classes to help you hide or show some element according to breakpoints:
.hide // Oculta em todos os breakpoints
.hide-on-small-only // Oculta no breakpoint small
.hide-on-med-only // Oculta apenas no breakpoint medium
.hide-on-med-and-down //Oculta no breakpoint medium e abaixo dele
.hide-on-med-and-up // Oculta no breakpoint medium e acima dele
.hide-on-large-only // Oculta apenas no breakpoint large
.show-on-small // Exibe no breakpoint small
.show-on-medium // Exibe no breakpoint medium
.show-on-large // Exibe no breakpoint large
.show-on-medium-and-up // Exibe no breakpoint a partir do medium
.show-on-medium-and-down // Exibe no breakpoint abaixo do medium
http://materializecss.com/helpers.html