How Do We Use the Scientific Method to Perform an Experiment?
High School of Hospitality Management, Manhattan
Summer Research Program for Science Teachers
Apply the scientific method
Recognize the limitations of data collection
Work effectively in small groups
Warm-up: (5 minutes)
Drop Alka-Seltzer tablets in water and ask students to make observations.
What is a more scientific word than bubbles? Gas
What do you know about gases? (Where do you see them and what are their properties?)
Demonstration (5 minutes)
1) fill film canister ½ full with water
2) Drop in ¼ a tablet of Alka-Seltzer
3) Snap lid on tight and invert canister (lid is on table)
4) Wait and record observations
After rocket launches ask student what “things” were involved, time, water, tablet, height, canister. Prompt them to look at what they wrote for observations. Elicit that these “things” are called variables. Ask student to recall which are independent and which are dependent?
Each group will receive one Alka-Seltzer package, water, one film canister, stop watch or meter stick (depending on selected dependent variable)
Have students explore one of the independent variables and dependent variables in small groups.
See lab sheet
Summary: (5 minutes) Discuss conclusions
NYC Science Performance Standards:
S5: Scientific Thinking
S8: Scientific Investigation a-Demonstrates scientific competence by completing a controlled experiment. c-Demonstrates scientific competence by completing a design.
S6: Scientific Tools and Technologies e- Recognizes and limits sources of bias in data