The pH value of various soils with Cobra SMARTsense

Principle

Knowledge of the soil is of great importance for agriculture. In order to familiarize the students with this topic, two sub-experiments are used to show, on the basis of pH determinations, how different soils are (sub-experiment "Characteristic pH values of soils") and how great the differences are even within a soil (sub-experiment "Soil profile").

Benefits

• Experiment is part of a complete solution with numerous experiments in the field of ecology
• Measurements possible indoors and outdoors, for mobile and desktop use
• Especially understandable and didactically prepared description of the experiment (relevance to everyday life, etc.) including protocol questions
• Future-oriented teaching: Integration into digital science lessons with tablets or smartphones
• Increased motivation of students by using the intuitive measureAPP

Tasks

1. Taking soil samples
2. Identifying soil profiles
3. Taking pH measurements of soil horizons of given soil profiles

Learning objectives

• Soil fertility
• Soil profile
• Soil horizon
• Soil sample
• pH determination
• Buffer capacity of soils