  'slide4': '$percentage >= 60 && $percentage < 80',
        'slide5': '$percentage >= 80'
      }">

      <div class="slide slide--1" ng-show="slide1">
        <h2>Slide 1</h2>
      </div>
      <div class="slide slide--2" ng-show="slide2">
        <h2>Slide 2</h2>
      </div>
      <div class="slide slide--3" ng-show="slide3">
        <h2>Slide 3</h2>
      </div>
      <div class="slide slide--4" ng-show="slide4">
        <h2>Slide 4</h2>
      </div>
      <div class="slide slide--5" ng-show="slide5"