In order to teach her students the stages of the water cycle, Mrs. Nandulagives each of her students a Ziplock bag, a small plastic cup and colored water. They fill the cup with the colored water, carefully place it upright inside the bag and seal the bag closed leaving it sitting on a sunny window sill. Each day they record the changes which occur inside the back. Over time, the students notice that water droplets form inside the bag and then begin to pool in the bottom of the bag. Which instructional model is Mrs. Nandula using to teach her students the stages of the water cycle?
