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Customization of Educational Resources for Harris-Hillman Special Education School

Customization of Educational Resources for Harris-Hillman Special Education School. Robert Connor. Proposed Problem. An adjustable tray with side pieces (wings) (to keep arms inside). The tray needs to adjust height and angle--to fit feeder seat. Background.

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Customization of Educational Resources for Harris-Hillman Special Education School

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  1. Customization of Educational Resources for Harris-HillmanSpecial Education School Robert Connor

  2. Proposed Problem • An adjustable tray with side pieces (wings) (to keep arms inside). The tray needs to adjust height and angle--to fit feeder seat.

  3. Background • Special Education students are Special • Harris-Hillman contains the students that are too handicapped for inclusion • Irene Lowe’s class contains the most handicapped of all Harris-Hillman students References: Duran, Elva. Teaching the Moderately and Severely Handicapped Student and Autistic Adolescent. Charles C. Thomas:1988 Berdine, W; Blackhurst. An Introduction to Special Education. New York: 1985.

  4. Project Breakdown

  5. Sitting height 60 cm Weight 26.3kg(58lb) vertical CG at 30% sitting height (~18cm) from base horizontal CG 20cm from seat back Muscle Force exerted in Frontal plane: 20lb Reference Roche, Alex and Robert Malina. Manual of Physical Status and Performance in Childhood. Vol. 1A. Plenum Press. New York: 1983. Muscle Force exerted in the Sagital Plane: 25 lb. Subject Anthropometrics

  6. Frontal Plane Sagital Plane

  7. Restraint Device Device withstands calculated extremes in the changes in the CG and the estimated Muscle Force Exertions Tested initially by weight placement until failure Tested in classroom with success Tray table Calculations show that a working load of 45lb. Tested by weight placement Calculations and Testing

  8. Design Specifications • Strength Considerations • 125 cm^2 of touch fastener minimum • 187 cm^2 Incorporated in Design • Safety Factor • 1.5

  9. Safety Considerations

  10. Market Analysis Customers tall, severely-handicapped individuals with little muscle control 10,000 students nationwide Life cycle lasts about two years depending of frequency of use Cost/Benefit Development Costs 1 student@$10/hour for 60 hours Materials $20 Benefit Analysis Safer experience 15 minutes of Instructor’s time per day (Correcting a child for one minute every fifteen minutes that the chair is in use. ) Economic Analysis

  11. Questions and Suggestions

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