[url=https://www.geogebra.org/m/chr5tcam]Click here for a link to the GeoGebra book containing these 4 questions[/url]. [br][br]In this URL, press [b][color=#1e84cc]CREATE LESSON[/color][/b] (upper right corner) to create a lesson for students to join. [br]Each student will receive a set of four questions that are different from other students.