Procedure: I. Engagement Ask students what they know about Big Bang theory. Was this always the leading theory for the origin of the Universe? Does our understanding of the Universe change over time? What drives scientific discovery? Students may think that science is “done,” and that we have all the answers. Hopefully, they recognize that science is an active discipline where new technologies are feeding new discoveries. Either way, this jigsaw activity will help students see how scientific advances have helped astronomers come to their current understanding of the nature of the Universe. II. Exploration Start by dividing the class into groups of 6 students. (It’s better to have a group or two with an extra participant than to have groups with fewer than 6 students.) These groups should be diverse in terms of student ability. Appoint a student leader for each group. Each student in a group is responsible to learn about the main stories in one year of the Cosmic Times papers. (In the case of an extra student in the group, pair up two of the students to work on the same Cosmic Times year.) Assign each student to one Cosmic Times year. The students assigned to each year will be responsible for reading/learning the following articles: • 1919 o Sun’s Gravity Bends Starlight o Why a Total Eclipse? o Expanding or Contracting? Cosmic Times Jigsaw 4
• 1929 o Andromeda Nebula Lies Outside Milky Way Galaxy o Universe is Expanding • 1955 o Yardsticks’ in Neighbor Galaxy Double Universe’s Size o Origin of Everything: Hot Bang or Ageless Universe? o Hoyle Scoffs at “Big Bang” Universe Theory • 1965 o Murmur of a Bang o Big Hiss Missed by Others o Galaxies Still Misbehaving • 1993 o Baby Universe’s 1st Picture o Pancake or Oatmeal Universe – What’s for Breakfast? o Dark Matter Hunt Heats Up • 2006 o Faster Walk on the Dark Side o Biggest Mystery: What is Dark Energy? o Sorting Out the Dark Stuff Give students enough time to read their articles through twice and become familiar with the content of their articles. They don’t need to memorize the information. III. Explanation Form “expert groups” by having all students responsible for each year get together (in other words, the students responsible for the 1919 articles from each jigsaw group meet as an “expert group”, all 1929 students get together, and so on.) Give the expert groups time to discuss the main points of their articles and
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- Spring '14
- January 1, May 16, January 15, cosmic times