What do birds from the Amazon, meerkats from Africa, and frogonauts in Space have in common? They are motivational characters in our mathematics units to challenge young students. Bright primary-level students deserve the challenge and motivation of high-level mathematics just as much as older students. Come learn about new NSF-funded curriculum units focused on the NCTM Standards and exemplary practices in gifted education. The units provide engaging investigations that encourage students to think and act like practicing mathematicians. Classroom discussions and student written work are highlighted. Participants will explore differentiated, hands-on activities to take back to their classrooms.