Introduce the logic behind a dichotomous key or administer a group performance assessment with a fun and challenging classification lesson. With explicit instructions for the teacher and for collaborative groups, as well as engaging visual manipulatives, your kids will enjoy looking at the pictures of the animals they are sorting, as well as using the graphic dichotomous key. They wrap up the lesson by writing a paragraph about one of the animals that was classified. Note: Time will vary depending on the age/ability level of learners.