1. 2001-2002 BME Senior Design Project Toy for Handicapped Child Theresa Carr Adrienne Dula

2. Advisor: Ms. Reesi Davis Special Education Teacher Tom Joy Elementary School

3.  Roughly 2% of pre-school and school- aged children in the United States are mentally handicapped and also suffer from visual deficiencies  4% of non-handicapped children also exhibit deficiencies in their visual tracking skills Background/Market Potential:

4.  Most products that help improve visual tracking abilities are designed for adults and are too complicated for handicapped children  There are few toys available on the market that:  make children utilize their tracking/pursuit eye movements  keep child’s attention  are safe for handicapped child use  are inexpensive Similar Products:

5. Jonathon:

6. Teresita:

7. Criteria for Toy:  After observing the children in Ms. Davis’s class room and discussing her desires for the toy decided on priorities:  Priorities (in order of rank): SafeSafe Keep child entertained (fun)Keep child entertained (fun) Improve visual tracking skillsImprove visual tracking skills DurableDurable Utilize other skills (fine motor skills/reasoning)Utilize other skills (fine motor skills/reasoning) AffordableAffordable

8. Diagram of Problem Formulation

9. Schematic of Proposed Toy

10.  Tubing: clear/transparentcorrugated 4” diameter  Base: white plastic shelves 4’ height  Connectors: Dryer vent connectors white plastic Physical Materials:

11. Assembled Frame

12.  Motion Sensor:  Switch  Circuitry Circuitry Materials: SETQ Flip-Flop RESET Oscillator Q 12-bit Counter Clear LEDs 9 V battery Freq=250Hz counts to 2 12 = 4096

13. Tubing$20.00Tubing$20.00 Frame/Base$30.00Frame/Base$30.00 Connectors$20.00Connectors$20.00 Nails/Screws/Tools$20.00Nails/Screws/Tools$20.00 Electrical Components$50.00Electrical Components$50.00 Balls$ 5.00Balls$ 5.00 Estimated Total$145.00 Preliminary Budget:

14.  InSight 2: InColor visual search task that utilizes a choice reaction time procedurevisual search task that utilizes a choice reaction time procedure Subject presented with arrays of 2,8, and 32 stimulus items and must accurately decide whether the target stimulus is present or absent (press “P” or “A” on keyboard)Subject presented with arrays of 2,8, and 32 stimulus items and must accurately decide whether the target stimulus is present or absent (press “P” or “A” on keyboard) Choice of stimulus items:Choice of stimulus items: Testing: E F

15. Each trial is timed and data is analyzed after 36 trialsEach trial is timed and data is analyzed after 36 trials Example arrays:Example arrays: Testing:

16.  Obtained permission slips for and pictures of children  Assembled base and frame  Contacted Harris-Hillman, Park Ave. Preschool (vision program)  Completed DesignSafe Analysis  Completed Innovation Workbench Analysis  Designed schematic for prototype circuitry Completed Work:

17.  Bi-weekly visits to Tom Joy Elementary  Test visual tracking skills of handicapped and pre-school aged children pre and post toy  Complete prototype circuitry for lighting system  Paint base/frame  Assemble finalized electrical circuitry  Wire-wrap, secure LEDs, battery power Current Work:

18. Future Work:  Test initial visual pursuit ability of children  Assemble sensor and lights for toy  Assemble entire device and present to child  Finalized cost analysis of device  Test visual tracking skills of child after repeated use of toy

19. Contact Information: http://vubme.vuse.vanderbilt.edu/group25_01/ Theresa Carr e-mail: theresa.d.carr@vanderbilt.edu theresa.d.carr@vanderbilt.edu Adrienne Dula e-mail: adrienne.n.dula@vanderbilt.edu adrienne.n.dula@vanderbilt.edu