In this activity, learners make critters out of recyclables and apply the rules of mathematics to solve genetics problems. First, learners make male and female heterozygous parent Recycle Critters with 5-8 sets of chromosomes. Then, learners build the phenotype of their Recycle Critter baby. Next, learners practice and master the six basic monohybrid problems as well as dihybrid problems. This lesson guide includes instructions on how to use the Punnett Square and forked-line methods for solving the problems. It also includes tips for making the Recycle Critters.