The document discusses several design thinking tools and techniques for framing problems, including statement starters, abstraction laddering, and stakeholder mapping. Statement starters involve reframing problem statements as questions to invite broader exploration. Abstraction laddering is a technique to reconsider problem statements by broadening or narrowing the focus through asking "why" or "how" questions. Stakeholder mapping diagrams the network of people with a stake in the system to guide research and build understanding.