Project Name: Versa Slate Improving the learning environment of the visually impaired in Cambodia by developing and distributing a paperless, portable, and erasable braille slate without any environmental constraint. Project Location: Cambodia Project Period: 7th, June 2019 ~ 6th, September 2020 (15months) Funder: Korea International Cooperation Agency (KOICA)

4. “You cannot see because you must have sinned a lot in your previous life.”
There are more than 200,000 blind and visually impaired people in Cambodia. They have rights to
learn and secure independent living. However, many people believe that it is shame to be born
with visual impairment because of the influence of Buddhism.
It is extremely hard to find out reliable number of the blind children in Cambodia because many
parents think it is a shame to have a blind kids and put them in the shade.
Mrs. Phalla Neang, the first special education teacher in Cambodia, thought different. She visited a
lot of family to find blind children by herself and persuaded parents to let her teach and take care
of the kids.

5. Mrs. Phalla Neang
Since 1987, she has contributed to improve social perception
of blindness and visual impairment.
In 2002, she joined Krousar Thmey special school for the
bind and deaf children and manages 5 blind schools in
Cambodia.
And she was awarded Global Teacher Prize which is
considered as a Nobel Prize for the educators in 2018
Impressed with her devotion to the blind children, we
determined to start our project in Cambodia and find
a way to improve her operating schools.

6. A necessary item for the blind students
in developing countries
Braille Board + Braille Slate + Stylus
For the blind student, it is necessary to use braille slate which
requires braille paper. However, we found that it is not
convenient to fix and unfix the braille papers to write and read
memos, especially when they solve math problems. And it is
even hard for the developing countries to supply braille papers
because of the problem of finance.

8. Product Name: Versa Slate
(Paperless, portable, and erasable braille slate)
Product Features: Stylus attached (magnetic included so that reduces the possibility of loss).
Directly write on the braille board without braille papers. Modifiable.

9. Goal: Improving the learning environment of the visually impaired in Cambodia by developing and
distributing a paperless, portable, and erasable braille slate without any environmental constraint. Criteria
Purpose / Outcome Indicator Baseline Middle Final Target Formular Source of Data
Improve education accessibility and learning efficiency
Shortened time
of math
problem
solving
15 (%) 15.22 15.22 15(%)
(use time of traditional braille slate –use
time of Versa Slate)/use time of traditional
braille slate x100(%)
Krousar Thmey
Provide final products Quantity 100 (EA) 100 100 100(대) 100 EA Krousar Thmey
Improve the number of direct / indirect beneficiary Beneficiary 2,500 2500 2500 2,500(명) 5x100+20x100
Outputs 2020 / 3Q Indicator Baseline Middle Final Target Formular Source of Data
1 User satisfaction 2020 3Q Satisfaction(%) 80(%) 83.49 83.49 80(%) Questionnaire Students
2 Braille paper replaceability 2020 3Q
Decrement per
each person
195 Pieces 1,000 1,000 195 Pieces
Answers from the teacher
from Krousar Thmey
Krousar Thmey

10. Month
Schedule
2019 2020
Jun Jul Aug Sep Oct Nov Dec Jan Feb Mar Apr May Jun Jul Aug Sep
a. Product Design
b. Metallic Molding
c. Working Mock-up Production
d. Final Product and evaluation from experts
e. Product Donation, and Evaluation
f. Patent Resister, RoHS Certified
g. Braille Translator, Videos Release
h. Product Training at Krousar Themy
i. Test of Learning Efficiency
j. Analysis of the reduced braille papers.
k. Partnership with Krousar Themy

12. Mechanism design
Conducted Design Development and
Mechanism Design
- Made 3 types of design(A, B, C) and
selected A as the final design.
- Mechanism Design: Pins, Holders,
and the other components of the
item.

14. Expert 1 Subtotal Total Ratio Result
1. General questionnaire 126 / 140
402 / 441 91.16% Excellent
2. Writing 37 / 49
3. Reading 68 / 70
4. Line, Cell distinction 80 / 84
5. Delete and reset 38 / 42
6. Protective case 53 / 56
Expert 2 Subtotal Total Ratio Result
1. General questionnaire 106 / 140
347 / 441 78.68% satisfactory
2. Writing 32 / 49
3. Reading 66 / 70
4. Line, Cell distinction 67 / 84
5. Delete and reset 31 / 42
6. Protective case 45 / 56

19. Time Time
Problem A ProblemB ProblemC ProblemA ProblemB ProblemC
Average 03:53.8 03:30.3 05:13.1 03:09.0 02:55.0 04:42.7
shortening rate 19.16% 16.80% 9.71%
Total 15.22%
Subtotal Total ratio result
1. General questionnaire 45.5 / 63
149.3 / 182
82.03
%
Good
2. Writing 16.4 / 21
3. Reading 25.5 / 28
4. Delete and Reset 23.3 / 28
5. Protective Case 38.6 / 42
Average of Total
Points
151.95 / 182 83.49% Good

20. With the successful overcomes from Versa Slate Project, we are performing production, sales and marketing, charities, and
provide Versa Slate to the blind people in the U.S, France, Holland, Taiwan, Thailand, Cambodia. We are keep going to make
new innovations which can make an impact on the assistive technology industry and improve the daily lives of the blind and
the visually impaired following to Overflow’s vision; Contribute to the society by creating innovative products and services to
improve information accessibilities of the people with visual impairment.