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High school chemistry teacher patents colour changing toothpaste

No coin nor oath required. For personal study only.

📜 SIMILAR VOLUMES

GUIDANCE OF PROSPECTIVE HIGH SCHOOL CHEM

✍ Leonard A. Ford 📂 Article 📅 1953 🏛 School Science and Mathematics Association 🌐 English ⚖ 98 KB

Mercury exposure in high school chemistr

✍ C. Crump; C. F. Bearer; D. C. Paschal; D. Rodenbaugh; R. A. Etzel 📂 Article 📅 1996 🏛 Springer 🌐 English ⚖ 377 KB

Changes in High School Teachers' Constru

✍ Jung-Il Cho; Robert E. Yager; Do-Yong Park; Hae-Ae Seo 📂 Article 📅 1997 🏛 School Science and Mathematics Association 🌐 English ⚖ 420 KB

Turnover of high school chemistry teache

✍ Will S. Deloach; Willa Boysworth 📂 Article 📅 1957 🏛 John Wiley and Sons 🌐 English ⚖ 129 KB

Chemistry Teachers' and Chemistry Studen

✍ Jeffrey R. Lehman 📂 Article 📅 1989 🏛 School Science and Mathematics Association 🌐 English ⚖ 176 KB

CHANGING CONCEPTION OF TEACHING HELPS IN

✍ Ralph E. Dunbar 📂 Article 📅 1938 🏛 School Science and Mathematics Association 🌐 English ⚖ 334 KB