What technique is Mr. Forbes using to help his ELs express their ideas during the discussion?

Paraphrasing refers to the act of restating someone else's ideas in one's own words, which can assist with comprehension but does not inherently provide the necessary support for expressing original ideas. While Mr. Forbes may encourage paraphrasing to clarify understanding, it does not serve as a primary technique for helping ELs formulate and express their own thoughts.

Exposition is a method of presenting information or explaining concepts, typically used in teaching to convey content knowledge. While it can help ELs learn new vocabulary or ideas, it does not focus on the interactive and supportive nature of discussion, which scaffolding specifically addresses.

Decoding is the process of translating written text into spoken language, which is essential for reading comprehension. However, it does not directly assist in the expression of ideas during discussions. Mr. Forbes's technique centers around enabling ELs to express themselves, rather than merely decoding text.