After teaching for seventeen years, I have always found students struggle with domain, range, increasing and decreasing. I have also struggled trying to find different ways to teach the concept. Since math came easy to me, I just understood those concepts; however, students really struggle to see what I see. :) This year, my students are finally "getting" the concept of domain and range. For domain, I told the kids that there was a man walking the x-axis looking up and down. Where does he start to see the graph? Where does he stop seeing the graph as he is walking the x-axis? Same for range...a little guy is climbing up the y-axis looking left and right. Where does he start to see the graph? Where does he stop seeing the graph as he climbs? It isn't perfect, but I think the kids got it. As for increasing and decreasing...I told the kids to find the min and max first. Thank God for Desmos! :) I told them to label the x-value for min and max on their graphs. Then I treate