Teaching Chemistry : 無料・フリー素材/写真
Teaching Chemistry / starmanseries
| ライセンス | クリエイティブ・コモンズ 表示 2.1 |
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| 説明 | On an old-fashioned blackboard, with chalk, no less. In 1999 I enrolled in Marshall University in Huntington, WV - the same college Earle Kinder attended. I can testify that, as of that date, they were still using a chalkboard and chalk. Nothing had changed in the 30 years since Earle attended. |
| 撮影日 | 2012-06-22 10:50:14 |
| 撮影者 | starmanseries |
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