Showing posts with label Concepts. Show all posts
Showing posts with label Concepts. Show all posts

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”)