Excellent interactive hands-on activity for students. This activity includes a chart formatted to allow you to print the information onto mailing labels. Students receive one blank chart and one chart with 30 items pertaining to acids bases and pH. They have to categorize each item. This is a great activity to use for an evaluation. If you choose not to print the information as labels, just print on copy or construction paper. Students can cut and paste the information on the chart. There are three categories, pH, Description, and Property. This activity usually takes the entire class period. It's great as a review. I suggest having them write a paragraph about what they have learned about acids, bases and pH. Please rate this product to help me understand how I can best serve you.