Objectives◦ Today I will be able to:
◦ Apply knowledge of significant figures to a quiz Differentiate between accuracy and precision Apply making accurate and precise measurements to a lab
Informal assessment – monitoring student questions, group interactions during the lab and responses to the discussion after the lab
Formal assessment – analyzing responses to the lab calculations and results section and the exit ticket
Common Core Connection ◦ Build Strong Content Knowledge◦ Attend to precision ◦ Model with mathematics◦ Use appropriate tools strategically ◦ Reason abstractly and quantitatively
Evaluate: Warm-Up Evaluate: Significant Figures/ Safety Quiz Explain: Accuracy and Precision Notes Engage/Explore: Accuracy and Precision Lab Elaborate: Accuracy and Precision Lab
Discussion Evaluate: Exit Ticket
What are some techniques I can use to make precise measurements in lab?
Why is it important to make accurate and precise measurements?
Today I will be able to:◦ Apply knowledge of significant figures to a quiz◦ Differentiate between accuracy and precision◦ Apply making accurate and precise
measurements to a lab
Write the conclusion for the Accuracy and Precision Lab
Warm-Up Significant Figures Quiz Accuracy and Precision Lab Trial 1 Accuracy and Precision Notes Accuracy and Precision Lab Trial 2 Accuracy and Precision Lab Discussion Exit Ticket
Take everything off of your desk except for a writing utensil and a
calculator
Collect data for trial 1 and complete the trial 1 calculations at your desk. Do not
complete trial two calculations yet. Record your percent error on the board.
No closed toe shoes or aprons are required
At your table discuss the following questions and be prepared to share out:◦ What was your percent error?◦ Were your measurements accurate?◦ Were your measurements precise?◦ How did the accuracy and precision of your
measurement affect the volume you calculated?
Measurement is close to the accepted value
Having more significant figures in a measurement
Take 2-3 minutes to read the lab procedure. Put a box around
measurements you will record into the data table.
Collect data for trial 2 and complete the trial 2 calculations at your desk. Record
your percent error on the board.
At your table discuss the following questions and be prepared to share out:◦ What was your percent error?◦ Were your measurements accurate?◦ Were your measurements precise?◦ How did the accuracy and precision of your
measurement affect the volume you calculated?
Using the data and the information used in the discussion write your conclusion for the
lab. If you do not finish writing the conclusion in class, it will become your
homework.
What are important components to include in a conclusion?
Icebreaker:◦ Would you rather have legs as long as your
fingers or fingers as long as your legs?◦ Would you rather win the lottery or live twice as
long?