The Human Calculator PLUS is a study set published in 1991 by author Scott Flansburg. The books focus on math magic and include an answer guide. There is a VHS tapes and 4 cassette recordings for educational purposes.
The Human Calculator PLUS is a study set published in 1991 by author Scott Flansburg. The books focus on math magic and include an answer guide. There is a VHS tapes and 4 cassette recordings for educational purposes.