Math Project-based learning (PBL) for Halloween, Fall, or October. Help your students practice decimals, expressions, and graphing with this quality project-based learning for grades 4 and 5. It includes a teacher guide walking you through each step. Are your students excited about October? Mine absolutely love pumpkins, bats, and everything Halloween! This is a great activity to get students excited about Math! Project-Based Learning incorporates in-depth inquiring, voice, and choice. Students