Function Specimen

Sale price¥2,079
style: No.1 Rhodonea Curve Carmine Red

In mathematics, a function is like a machine that takes a specific number and converts it into another specific number, and is generally written as a mathematical formula.
The relationship between input and output shown as a two-dimensional diagram is known as a graph. The shape of the graph changes in relation to the constant in the formula.
These changes have been cut out of paper and assembled as a Mathematical Function Sample.

The product is made to order. After confirming your order, we will begin manufacturing the product.
Please allow 2 to 3 weeks from order to shipment.
We cannot accept cancellations, changes, returns, or exchanges after the order has been confirmed.
If you order a made-to-order product and another product at the same time, they will be shipped together with the made-to-order product.

Please allow us some time for delivery, but we will carefully finish each product one by one, so we hope you can look forward to it.

Function Specimen
Function Specimen Sale price¥2,079
Function Specimen
Function Specimen Sale price¥2,079
Main body paper

body size


package size



16 cards

Target age

12 years old~

Number of players

1 person

required time

10-20 minutes

production year



How to enjoy
1. Remove pieces from box and shuffle
2. Stack in order
3. Place completed sample in box and display



Hirano Keiko

As a child, I loved specimens. I was fascinated by the mystical world of specimens filled with diverse individuality in small square boxes, such as mineral specimens, seashells, and insect specimens. was When I picked up Shunji Yamanaka's "Functional Specimen" that I met at Hiradai in the Design Collection Corner, I remembered how important it was that I loved specimens.

Mr. Shunji Yamanaka's "Function Specimens" gives us various realizations. By visualizing the order of physics, we realize that "laws are beautiful," and by the precise finishing of specimens, we feel that "technology is beautiful." A good designer can increase the motivation of the technicians who partner with him, but considering the difficulty of this specimen, you can see the relationship of trust with the makers. Various imaginations spring up from a small existence of less than 10 centimeters square. The existence of "function samples" is great.

We believe that design is predicated on function. And there is purpose before function, and design is developed with a sense of purpose. The “calendar” is designed to recognize the days and days of the week, and the “pot” is designed as a cooking utensil. Then, when we think about the functions, purposes, and significance of existence of "function samples," we can visually and quantitatively recognize the laws of mathematical formulas, so that even people who cannot imagine mathematical formulas can feel the beauty of mathematical formulas. Understanding and interest in physics and mathematics will advance. It has the function of feeling, and the purpose is to appeal to the sensibility.

Lack of imagination impoverishes and weakens society. I think it would be good if there was a "function sample" for emotional education.