Bubble Lab Science Investigation | Scientific Method, Variables, Data & CER

Engage students in a hands-on investigation while reinforcing essential scientific inquiry skills.
In this Bubble Lab, students investigate:
Does the brand of dish soap affect bubble size?
Students work through the scientific investigation process from hypothesis to conclusion. The activity provides an accessible, high-interest way to practice variables, constants, measurement, repeated trials, data analysis, graphing, and evidence-based reasoning.
Students will practice:

• Writing a testable hypothesis
• Identifying the independent and dependent variables
• Identifying constants
• Following an experimental procedure
• Measuring bubble diameter
• Recording quantitative data
• Completing multiple trials
• Calculating and comparing results
• Graphing experimental data
• Analyzing patterns in results
• Using evidence to support a conclusion
• Applying CER-style scientific reasoning
  Included in this resource:
• Bubble Lab instructional slides
• Teacher Guide
• Student Data Sheet
• Complete Answer Key
  The investigation compares different brands of dish soap to determine whether soap brand affects the size of bubbles produced.
  This resource works well for:
• Scientific method units
• Experimental design
• Variables and constants
• Data collection and analysis
• Measurement practice
• CER/conclusion practice
• Beginning-of-year science skills
• Review of scientific investigations
  The files are provided as PDFs and are ready to print or display.
  Recommended for: Middle school science / approximately Grades 5–8.