Looking for problems that promote group discussion and team work? How about data gathering, organization and analysis? Or, the really important one, using writing in math to explain solutions! These are problems that do just that! The Citizens of Half Moon Bay, Morton, and Their Pumpkins has 3 problems that build on each other. The investigations, based on triangular numbers, can be used with students in 5th through 8th grade. Students will problem solve at different levels using different strategies. Less experienced students should be encouraged to build concrete models using centimeter cubes for pumpkins. They can collect and organize data once they have a working model. The standards should not limit content or academic rigor for high ability learners; however, there are some connections to best practice for gifted learners and the CCSS that are addressed with these problems.