2.  A structured inquiry process that is fast and uses yes/no examples.  Students figure out the attributes of a group or category that has already been formed by the teacher. Purpose  To clarify ideas and to introduce aspects of content  To help formulate a concept through the use of examples.  To become skilled at identifying relationships.  Students who catch on quickly can be invited to suggest their own examples.

3. Advantages for students:  Make connections between what they know and what they will be learning  Learn how to examine a concept from a number of perspectives  Learn how to sort out relevant information  Knowledge of a concept by is extended by classifying more than one example of that concept  Go beyond merely associating a key term with a definition

4. Yes  5+5  11-1  10x1  How are these 3 alike? No  6+6  3+3  12-4  How are these 3 alike? Where should these go? 3+4+415-5 3x316-5

5.  Give examples and non-examples  Have students define the concept › 10 Facts and Not 10 Facts  Define on paper and list attributes  “Unpack” the thinking process as a class

6.  This activity can be done on the board, chart paper or overhead projector to a large or small group. It also works well as one-on-one work.  Rather than starting with the teacher's concept, use a student's concept.  Can be used to introduce or conclude a unit.

7.  Present all of the positive examples to the students at once and have them determine the essential attributes.  Present all of the positive and negative examples to the students without labeling them as such. Have them group the examples into the two categories and determine the essential attributes.  Have the students define, identify the essential attributes of, and choose positive examples for a concept already learned in class.  Use the model as a group activity.

8. Have the students:  write the definition from memory  determine positive and negative examples from a given group  create their own examples of the concept  "think aloud"  write a learning log  do an oral presentation  create a web, concept map, flow chart, illustrations, KWL chart, T chart

9.  How can you use this in your classroom?

10.  Saskatoon Public Schools. (2009). Instructional strategies online. Retrieved from: http://olc.spsd.sk.ca/DE/PD/instr/strats/cattain/  Silver, H.F. Strong, R.W. & Perini, M.J. (2007). The strategic teacher: Selecting the right researched- based strategy for every lesson. Alexandria, VA: ASCD.