Using Students' Smartphones as Tools to Determine Total Carbohydrates in Beverages

Smartphones are used universally in many areas due to their advanced features. Smartphones are also widely used by teachers and students in education. This research aims to design low-cost and easy experiments for biology lessons using smartphones. Colorimetric measurement was made with a smartphone. Mobile applications were used to read color change values. The amount of sugar in beverages was calculated with the students. They could create standard curves, measure with a smartphone, organize the data, and determine sugar concentration. It was determined that the students had positive thoughts about the activity. Self-confidence results indicated that the activity had a positive effect on students' self-confidence. Although there was a decrease in the mean scores of difficulty, it was revealed that the mean scores were over the “moderate” level. As a result, it can be said that the activity may be easily practiced by teachers and students in biology lessons.