Our pH, Indicators & Dyes kit includes 4 primary activities, each accommodating up to 40 students. This STEM kit contains structured investigations to make inquiry based learning affordable and fun! For pennies per experiment, your students have access to digital PDF content such as Individual activities, Background information including content tables and concept animations, Power point concept presentation, and a Comprehensive Glossary. Student activity PDFs have a special Typewriter functionality allowing them to take notes, record experimental data, and answer analysis questions. They simply e-mail their worksheets back to you!