神奈川県立生命の星・地球博物館

BULLETIN OF THE KANAGAWA PREFECTURAL MUSEUM Natural Science
No.30,index(Japanese) | index (Japanese) || No.30,index | index |

Bull. Kanagawa Prefect. Mus. (Nat.Sci.), No.30, Mar.2001


A Test of Touch Sensation Using Ammmonite Fossils and Its Implication in Earth Science Education

Hiroyuki YAMASHITA, Kiminori TAGUCHI & Yoshiyuki KOIDE

Kanagawa Prefectural Museum of Natural History, 499 Iryuda, Odawara, Kanagawa 250-0031, Japan

Abstract. We investigated the sense of touch for ordinary persons and visually impaired ones using four specimens of ammonite fossils. Two kinds of tests were carried out to describe differences among specimens and to classify them.

There was no distinct difference in the touch sensation between the ordinary and the visually impaired persons. However, the ways of touching were different between them. The visually impaired persons often tried to strike the fossils by fingers or put one upon another to compare their sizes.

Most of the subjects classified the specimens by size and weight. They could classify the specimens by form under the concept of biological species, and recognized the difference between ammonites and gastropods. We found out the importance of touch method for the purpose of recognition of three dimensional shapes.

Keywords: touch sensation, earth science education, fossil, new perspective, recognition of shape


摘要

 4種類のアンモナイトを材料に、健常者と視覚障害者に化石の触察実験を行った。触察実験は、アンモナイトを触り感想および相違点を聞き取る触感実験と、 4つのアンモナイトを触覚のみで分類する実験方法である。

触感実験では、健常者と視覚障害者とでは有意な差が見られなかった。しかし、触察の方法は異なり、視覚障害者の触察の方法は、標本を触察する際の参考となる。 分類実験では、重さや大きさによる分類がなされたが、生物種を理解すると、健常者と視覚障害者とも形態を基準とした分類がなされた。 触覚はアンモナイトの巻き方のように、立体的なものを認識するために有効な手段である。


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