Water 4: Detect invisible substances in water 2 (student instructions)
Experimentation instructions for students in grades 5, 6, and 7:
Detailed instructions and questions for students on conducting the fourth subexperiment on water quality. The presence of dissolved substances is verified via electrical conductivity.
The instructions first include a photo and a list of the required apparatus and materials. Text and pictures explain the preparations for the experiment step by step. Then several assignments are presented: The students should express their guesses, conduct the experiment, and note down their observations.
Information and ideas:
• Observe the safety information in these instructions as well as in the teacher information related to the experiment and discuss them with your students.
• Also observe the applicable safety guidelines for your school.