Student precision using glass pipettes
Summary
In this beginning of the year lab, students will investigate the concept of precision, graphing and collecting class data. By doing the lab, collecting data and constructing a class data table and graphing the results students will be able to understand the concept of precision.
The students will write a lab report that describe their findings.
CollapseLearning Goals
The activity is designed for students to collect data, do data analysis, be able to use equipment properly and be able to use data collected and present the data in graphically form.
Context for Use
The lab for 9th grade students will take two days after proper instruction of pipettes and use of balances are given to the 9th grade students. This lab would be best done at the beginning of the school year so that students understand the process of data collection.
The lab can be easily adapted into any science classroom.
The lab can be easily adapted into any science classroom.
Description and Teaching Materials
The lab will require glass pipettes, balances, and water in order for the students to do the experiment.This lab would be done after data types are talked about and use of glassware and other equipment in the science lab.
See attachment for procedure etc.
See attachment for procedure etc.
Teaching Notes and Tips
The lab itself may take about 20 minutes. Student then can write their data on the board for the class to copy. Discussion may follow about the data.
I used water but other solutions and or liquids may be used.
I used water but other solutions and or liquids may be used.
Assessment
Students are given quizzes. The students will be required to turn in a lab report with their data, class data table which also includes a graph of the results.
Standards
1.B Scientific inquiry
2. Student will distinguish between qualitative and quantitative data.
3. Student will apply mathematics and models to analyze data and support conclusions.
4. Student will identify possible sources of error and their effects on results.
2. Student will distinguish between qualitative and quantitative data.
3. Student will apply mathematics and models to analyze data and support conclusions.
4. Student will identify possible sources of error and their effects on results.