Customization of Educational Resources for Harris-Hillman Special Education School

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. • A small motor installed under a vestibular board to make it rock intermittently.

4. 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.

5. Project Breakdown

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

11. Moments Withstood Sagittal Plane 11Nm Frontal Plane 7Nm Forces exerted Sagittal Plane Forward Muscle Force= 200N Gravitational Force= 45N Frontal Plane Side Muscle Force=22N Gravitational Force=45N Calculations and Testing

12. Design Specifications • Strength Considerations • 100 cm^2 of touch fastener minimum • 187 cm^2 Incorporated in Design • Safety Factor • 1.87

13. Safety Considerations

14. 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 10 minutes of Instructor’s time per day ($5/day) Economic Analysis

15. Questions and Suggestions