Monday, October 18, 2010

Viewing what to teach through concepts and operations

The following information is from Unit 18 of the book Teaching: A Course in Psychology by Wesley C. Becker, Siegfried Engelmann, and Don R. Thomas. 

Note: Science Research Associates published the book in 1971. I am unsure if the publishers reprinted the book or if it is available to buy. I found it through a university inter-library loan program. I suspect that Becker or Engelmann use the book or some form of it in their special education teaching classes at the University of Oregon.
  • Concept teaching
    • Terms
      • Concept: idea you want to teach
        • Example: you want a student to say that  some red things are red
      • Teaching set: the examples you use to teach
        • Example: the red things that you present
      • Concept instances set: all things related to the concept
        • Example: all possible red things
      • Non-examples: things unrelated to the concept to discriminate
        • Example: other colored things
    • A concept is taught when any or all members of the concept set are correctly identified
      • Even if some members were not in the teaching set
      • Non-examples are responded to differently (not identified)
  • Behavioral view of teaching
    • Stimulus control of behavior: how stimulus events control a response
      • In the presence of examples of the concepts, reinforce one response
        • Example: reinforce a student pointing to a red thing when you ask, “Is it red?”
      • In the presence of non-examples of the concepts, reinforce another response
        • This can also be NO response
        • Example: reinforce a student for NOT pointing or for shaking his head “no” when you show a blue thing
      • Teach the student more and more critical concept characteristics to insure a concept is taught
        • Example of when critical concepts characteristics are not taught
          • A student can identify a square by saying its name
            • The teacher has shown him a small black square and a big white circle
            • The teacher shows him a small black circle (he says “square”)
            • The teacher shows him a small white box (he says “not square”)
            • The teacher shows him a big black circle (he says “square”)
            • The teacher shows him a bigger black circle (he says “square”)
          • The student discriminates the shapes on the colors (all black things are squares)
          • What to do:
            • Pay attention to teach the concept based on the shape and present a variety of colors and sizes
            • OR teach both the circle and square at the same time with the exact same size and color
          • Further example of misunderstanding of concept characteristics
            • The teacher presents the circle and square at the same time with the exact same size and color (white and medium size)
              • The student correctly says “square” and “not square”
              • The teacher shows him a medium white rectangle (he says “square”)
              • The teacher shows him a medium white triangle (he says “square”)
              • The teacher shows him a medium white circle (he says “not square”)
            • The student knows to look for corners or straight sides, but not for FOUR EQUAL ANGLES and FOUR EQUAL SIDES
        • Present more non-examples as the student internalizes the the concept
          • Example: present a rectangle, triangle, and circle while teaching the square
    • Teach only the essential characteristics of a concept
      • Rules
        • It is not possible to teach a concept through one example and one non-example
          • You must show a concept instances set and non-examples
        • The concept instances set must have all essential concept characteristics
        • The non-examples must lack all or some of the essential concept characteristics
        • Vary stimulus characteristics that are not essential to the concept set and non-examples
    • Concept learning happens through two discriminations
      • Discriminate relevant characteristics of the concept set from relevant characteristics of the non-examples
      • Discriminate irrelevant characteristics in the concept set and non-examples
      • Example of teaching color
        • Red cannot be taught without also showing non-examples of red such as blue, orange, green
        • You are not teaching to discriminate blue from orange at this time
        • Red needs to be taught by teaching that texture, pattern, shape, brightness, position, or size of things are all irrelevant
  • Engelmann’s definition of concept from his book Conceptual Learning
    • Uses all three concepts of a functional definition of behavior (stimulus event, procedure, and behavioral response)
    • A concept: set of characteristics shared by a group of instances and not shared by other instances in a universe of concepts
    • Terms
      • Shared characteristics: physically definable characteristics
      • Instances: basic units to give examples of a concept
      • Universe of concepts: the set of concepts that the concept comes from and will be discriminated from
    • Procedural and functional steps
      • Identify a stimulus event that shares specified physical characteristics
      • Reinforce one response for this stimulus event
      • Reinforce another response for anything other than the stimulus event
      • To test a concept
        • Present new members of the concept class
        • Check for correct responses (behaviors)
    • Look at sets of concepts and common characteristics to design teaching strategies
      • Essential characteristics of a concept change as other concepts included in the universe of concepts change
        • Example: essential characteristics of a dog are paws, small size, light weight, and bark
          • If you introduce a horse (non-example of dog) its essential characteristics are hooves, big size, heavy weight, and whinny
          • If you introduce a mouse (non-example of dog) its essential characteristics  are claws, small size, light weight, and squeaks
            • Now you have to refine the characteristics for small size and light weight for dogs
        • You specify the essential discriminations that you teach to avoid confusing the concept instances with non-examples
    • Concept analysis
      • Determine the essential characteristics of the concept set you want to teach
        • Known as S+ (S for stimulus)
      • Determine the essential characteristics that make non-examples of the concept set different
        • Known as S-
      • Determine irrelevant characteristics of the concept set and/or the non-examples
        • Known as Si
      • Example: “squareness”
        • Teach squareness in a universe of concepts with closed geometric figures (like circles, triangles, polygons, etc.)
          • Essential characteristics of the concept set: closed figures with 90 degree angles, equal length sides, and straight lines (S+)
          • Non-examples: closed figures with any other angles, or unequal sides, or curved lines, or irregular lines (S-)
          • Irrelevant characteristics for both groups: size, color, etc. (Si)
        • To teach squareness you teach S+ from S- and Si
          • Also teach S- from Si
        • Examples of pictures to use
          • Squares with different colors and sizes and positions
          • All other shapes with white color only and different positions
    • How to design programs
      • Use the essential characteristics to teach discriminations
        • Use knowledge of some discriminations to move onto new ones
        • Focus on teaching concepts relevant to what the student already knows
      • Example with saying sounds for letters
        • The universe of concepts is letters and sounds
        • The first concept is the letter and sound “m”
        • The non-example is a picture of anything (such as a fish)
        • Introduce more letters and sounds
          • Start with letters and sounds that are least similar (easiest to discriminate)
            • Like “m” and “a”
            • But “m” and “n” or “d” and “b” are NOT similar
          • Avoid similar letters and sounds for later when the student knows more concepts
  • Concepts and operations
    • Operations or generalized response classes: behavior that functions outside of where it was taught
      • Concepts: essential stimulus characteristics that are shared by a set of instances and not shared by non-examples in a universe of concepts
      • Operations: essential response characteristics shared by a set of response in a given universe of operations
        • Instances are the same for concepts as individual responses are for operations
    • Examples
      • Concept of color instances: blue bucket, red paper, green plant
      • Concept of placing instances: place the box on a table, place the clothes in the dresser, place the paper on the desk
    • A program teaches concepts through a set of instances
      • The program teaches the range of instances, the range of non-examples, and the range of irrelevant stimulus characteristics
    • A program teaches operations through a set of tasks
      • The program teaches the essential characteristics of the operation, the essential characteristics of non-examples, and irrelevant response characteristics
      • Reinforce correctly performed tasks
    • Teaching both concepts and operations at the same time is possible
      • Example: move something in relation to something else
        • You can make unlimited operations such as place the box on a table, throw the clothes in the dresser, lift the paper on the desk
    • An operation can become a concept
      • Your observation of a student performing a learned operation is your concept of that operation
  • Example of teaching imitation
    • A student was in a class for low-functioning students and did not know how to talk or imitate others
    • The signal the teacher chose to teach imitation was the words “do this” and then follow the words with the action to imitate
    • The first task was for the student to raise her arm
      • The teacher said “do this” and raised her arm
      • The student did nothing
      • So the teacher raised her arm for her (passive shaping)
      • After several responses the student raised her arm on her own
    • The second task was for the student to tap the table
      • The teacher said “do this” and tapped the table
      • The student raised her hand
      • To discriminate between the two operations, the teacher took her hand and tapped the table for her
      • After several responses the student tapped the table on her own
    • Then the teacher went back and forth between the operations
      • To teach that “do this” (imitating) involves looking at what the teacher does and then perform it
    • New tasks were introduced as the student imitated the previously learned tasks accurately
      • She learned the new tasks faster and faster
      • After 50 tasks, the student imitated over half the new tasks the first time they were shown to her
      • She learned the operation of imitation
    • The student also learned how to imitate chains of responses
      • Such as “do this,” then stand up, walk across the room, and clap your hands
      • The teacher also started teaching the student to imitate sounds of words by inserting the sounds in the middle of a chain the physical actions
        • Such as “do this,” then stand up, turn around, say “ah”, and sit down
  • Operations needed for school success
    • Imitation
    • Follow instructions
    • Pay attention
    • Respond on signal
    • Work for periods of time
      • Persistence
    • These operations must be taught if the student does not demonstrate them
  • Habits and operations
    • Concept teaching and operation teaching can be taught in a classroom but applied anywhere else
      • Example: Verbal instructions to “turn left” can be taught in school but later used to learn how to drive a car
    • Habits are done efficiently when they are done the same way each time
      • The problem with habits is when the conditions change for the habits and they must be unlearned for new ones to be taught
  • Example of using teaching concepts and operations to teach single-digit addition without regrouping
    • Steps
      • The student is taught to count up to a number (rote chain, like 1, 2, 3, 4 to 10)
      • The student is taught to count objects up to that number
        • Counting objects is an operation to determine how many there are
      • The student is taught to identify symbols (numbers) that represent the counting
      • The student is taught to make pictures of the symbols
      • The student is taught that plus (+) means more
      • The student is taught that equals (=) means what is on the left side of the sign must be on the right side of the sign
      • 4+5= ? can be solved by drawing 5 pictures under the 5 and counting, “4, 5, 6, 7, 8, 9”
      • The student is taught to use his fingers to solve the problems instead of drawing pictures
      • The student is taught to count from one number to another to solve problems like 4+?=9 or 9=4+?
    • What is good about this system is that after just a little teaching of the operations, the student can do solve many sets based on the operations
      • Also the student learns algebraic equations concepts
  • Example of using teaching concepts and operations to teach reading by learning ten sounds
    • Steps
      • Teach the ten sounds
      • Teach blending skills at the same time as the sounds
      • Now the student can potentially read 720 three sound words, 4320 four sound words, and 21,6000 five sound words!
        • This is permutation of words (some are nonsense words but would give practice of the sounds)
      • Teach all forty sounds of English
        • Now the student can read much of the words in our language
        • Teach irregular words at the same time as decodable words
      • Operations for reading
        • Blending (example: “maaaaaaaaaan”)
        • Saying the word as a whole unit (example: “man”)
        • Changing a sound in the word (example: “map” or “pan” or “men”)

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