Students work with Professor Arbegla to build Algebra Tool Kits and search for the Secret Rule that makes her Fabulous Function Machine work. Their kits help them grapple with a Fabulous Function Machine malfunction, experiment with the Morph Machine, and try to solve Professor Brangle's Balances. In the final activity, students address real-world problems to design a bedroom floor plan.Algebra in Action lets elementary students explore and gain understanding of algebraic reasoning while deepening their understanding of numbers.