2. R. Miyadera, S.Hashiba and D.Minematsu, A beautiful figure made of ,

3. R. Miyadera, S.Hashiba and D.Minematsu, How high school students can discover original ideas of mathematics using Mathematics,

4. R. Miyadera, S.Hashiba and D.Minematsu, Mathematical Theory of Magic Fruits, -Interesting patterns of fractions-

5. R. Miyader, M.Sakaguchi and M.Masuda, The theory of Russian roulette (In Japanese),

6. R. Miyadera, K. Kawamoto and Y. Moriyuki, Theory of Russian roulette,

7. R. Miyadera, K. Miyabe, D. Kitajima, N. Fujii and K. Fujii, How High School Students Could Present Original Math Research Using Mathematica,

8. R. Miyadera, etc, The On-Line Encyclopedia of Integer Sequences, http://www.research.att.com/ njas/sequences/Seis.html

9. Hiroshi Matsui, Naoki Saita, Kazuki Kawata, Yusuke Sakurama and Ryohei Miyadera, A problem for a Fibonacci like sequence, Fibonacci Quarterly, to appear.

10. R.Miyadera, D. Minematsu and S.Hashiba, etc., How high school and undergraduate students could present original ideas of mathematics using a computer algebra system (In Japanese),

11. R. Miyadera, Yousuke Ikeda and Yasushi Kondo, What's special about this number

12. R. Cowen and J. Kennedy, Discovering Mathematics with Mathematica, Erudition Books, 2001.