This document discusses inquiry-based learning and provides examples of different types of project ideas that teachers can use to engage students through this learning model. It outlines the key steps of the inquiry process, including asking questions, developing hypotheses, experimentation, analysis and conclusions. Various strategies are presented for developing engaging driving questions and branching sub-questions to guide student research. Examples of different categories of project types are given such as solving problems, educating others, persuasive arguments, speculative scenarios and more.