19 部分翻译
Discuss with your group.
小组讨论。
. Tell your group about the invention. Ask them for their ideas.
告诉你的小组成员关于这项发明的情况。向他们询问他们的想法。
. Make notes about your discussions.
做你们讨论的记录。
Present your findings to the class.
向全班同学介绍你们的调查结果。