Students will build fundamental understanding of quadrilaterals while defining and identifying them using a dichotomous map diagram. The dichotomous map diagram utilizes dichotomous key principles by asking yes/no questions for students to answer as they identify all the possible names for 12 different quadrilaterals. This activity will lead to discussions such as: Why are all squares rectangles but not all rectangles squares? Such discussions will lead to understanding of the attributes of vari