This lesson activity is the perfect way to lead students from working with equations to working with inequalities. Students begin by participating in the activity by becoming human points on a number line. First, they take a look at the graph of a 1-variable equation on the number line, then move to graphs of 1-variable inequalities. As they populate the number line, they will begin to understand the concept of a "boundary point," and why a ray completes the graph.
After students complete each human graph, they will respond to a multiple choice question showing possible correct graphs for the inequality. While working in this section, it is a perfect time to have a class discussion about closed and open points.
Once students have an understanding about how to match an inequality with its graph, the lesson moves on to solving inequalities using inverse operations and drawing the graph of its solution. This section includes interactive elements, as well as a Venn diagram where students compare and contrast equations and inequalities. Pair practice and independent practice exercises are provided.