This document discusses generating and testing hypotheses. It explains that hypotheses can be approached inductively by drawing conclusions from known information, or deductively by making predictions using general rules. Six types of tasks that employ hypotheses are described: system analysis, problem solving, historical investigation, invention, experimental inquiry, and decision making. The document emphasizes that teachers should provide support for students to clearly explain their hypotheses and conclusions, such as templates, sentence stems, rubrics, and opportunities to present their thinking to others.