Scale
Use this scale in and out elements. Make sure to add the base transition class scale-transition. Then add the class scale-outto scale the element down until it is hidden. To start something as hidden, add the class scale-outfirst, and then add the class scale-into scale the element up until it is shown.
<!-- Scaled in --><a id="scale-demo" href="#!" class="btn-floating btn-large scale-transition"> <i class="material-icons">add</i></a><!-- Scaled out --><a id="scale-demo" href="#!" class="btn-floating btn-large scale-transition scale-out"> <i class="material-icons">add</i></a>