This is a simple lab write up that is great for students just learning about the scientific method or practicing lab write ups or the scientific method.
This is a powerpoint that helps the student review the scientific method by testing the pH of different varieties of citrus fruits. The students write down the steps of the scientific method on a piece of paper or in their composition book while following the powerpoint.
The scientific Method includes the Purpose, Question, Hypothesis, Materials, Procedure, Variables, Data/Graphs, Analysis and Conclusion
The last 5 slides give you samples of students' work for graphs/analysis/conclusion, plus teacher suggestions and instructions. The answers for the analysis and conclusion will vary depending on the student's data collection and/or their original hypothesis.
The average cost for this lab was about 15 dollars for different citrus fruits used (for about 100 students), assuming you have the basic supplies in your science classroom, such as pipettes, pH paper, pH meter, etc.