葉脈標本でしおりづくり

YOUR LINK HERE:

http://youtube.com/watch?v=-FoYwVoHnJw

葉っぱの葉脈のみを取り出す、葉脈標本。 • もともとは葉脈の作りを学習するための実験ですが、最近では「スケルトンリーフ」という呼び名で、いろんなフラワーアートで使われています。 • 今回は小学１年生でもできる、葉脈標本の作り方と、しおりづくりを紹介します。 • 　・必ずおうちの人と一緒にしよう • 　・材料をなめたり口に入れたりしないこと。 • 　・材料が通縦で目をこすらないこと。 • 　・火を使うときは、おうちの人にやってもらおう。 • 　・火を使うときは、周りに燃えやすいものがないか気をつけよう。 • １　用意するもの • 　　重曹、水洗い用の容器（洗面器など）、 • 　　ほうろうの鍋（アルミの鍋は使わない）、使わなくなった歯ブラシ、 • 　　少し長めのはし、ポリエチレンの手袋 • 　　植物の葉（今回は「ナンテン」を使用） • ２　手順 • （１）水400mLを鍋に入れる。（アルミの鍋はダメ） • （２）沸騰したら、弱火にして、重曹を大さじ３杯（45g）を少しずつ入れる。 • （３）よくかき混ぜる。（泡がたくさん出る） • （４）葉っぱを入れる。弱火で30分ゆでる。 • （５）ときどき裏返す。湯気が熱いので注意する。 • （６）葉が茶色くなる。30分したら、火を止める。 • （７）葉を取り出し、水で冷やしながらよくすすぐ。 • （８）使わなくなった歯ブラシで根気よく軽くたたくと、葉脈以外の部分がとれてくる。 • 　　　取れにくいときは、もう少しゆでてみよう。 • （９）葉を洗い、新聞紙などにはさんで水分を取り、 • 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