---
title: "第5課 · 2つの支点：第一関節と掌関節 · Piakno"
description: "ゆっくり鍵を押すとき第一関節がへこまず、掌関節の並びがはっきり盛り上がって見える"
url: "https://piakno.com/ja/course/piano-foundations/lesson/5"
lang: "ja"
alternates:
  en: "https://piakno.com/course/piano-foundations/lesson/5.md"
  zh-Hans: "https://piakno.com/zh-Hans/course/piano-foundations/lesson/5.md"
  zh-Hant: "https://piakno.com/zh-Hant/course/piano-foundations/lesson/5.md"
  ja: "https://piakno.com/ja/course/piano-foundations/lesson/5.md"
  ko: "https://piakno.com/ko/course/piano-foundations/lesson/5.md"
  es: "https://piakno.com/es/course/piano-foundations/lesson/5.md"
  de: "https://piakno.com/de/course/piano-foundations/lesson/5.md"
  pt-BR: "https://piakno.com/pt-BR/course/piano-foundations/lesson/5.md"
---

# 2つの支点：第一関節と掌関節

> ゆっくり鍵を押すとき第一関節がへこまず、掌関節の並びがはっきり盛り上がって見える

- [はじめてのピアノ楽典 本科コース](https://piakno.com/ja/course/piano-foundations)
- [前のレッスン · 手の形：手のひらの中の卵](https://piakno.com/ja/course/piano-foundations/lesson/4)
- [次のレッスン · 鍵盤の地理：右に行くほど高い](https://piakno.com/ja/course/piano-foundations/lesson/6)