Investigating: Toothpastes through Inquiry-Based Practical Work

Abstract

This authentic inquiry-based chemistry experiment provides high school students with an opportunity to investigate the effect of toothpastes on the rate of tooth decay. Students need to design and carry out a fair test to compare the effects of different brands of toothpaste. The author has developed rubrics for assessing students' planning skills and written laboratory reports.

Keywords:

• eggshell
• reaction rate
• scientific inquiry
• toothpaste