FPC Day 4

Uncertainty

Warm Up

• Get out notebook• Share out with your table group your favorite

song/radio station

Class Photo

• Norms!

Learning Target: glue on page 5

Agenda

• Homework: Safety Contract• Finish setting up Notebook• Intro to Uncertainty

Today’s Learning Target

• I can prepare to be safe in lab experiments• I can explain the importance of using

uncertainly in measurement.

Task Instructions: Notebook Set Up

• Get and Give information equally

• Working together will get there faster

• Stay on task!

DO• Follow the

directions to set up your notebook

• Ask three then me!

RAISE your hand if you have a clarifying question.

Task Instructions: Notebook Set UP

TIME • 10 minutes

Non Negotiables

• No food or drinks (except water) in class• No electronics unless we instruct you• Bathroom use: only 2x a week, max 4 minutes

Uncertainty

• Draw this on your white board

Tennis Ball (seconds) Tile (cm)

Warm Up- YOU HAVE 5 MIN TO FINISH

• Tennis Ball– One person needs to stand on the table and drop a

tennis ball– Everyone else at the table needs to time and record

their numbers on the white (there will be three)• Tile– Each person needs to measure the length of a tile

on the floor to the nearest mm– Record numbers on white board (there will be four)

Share Out

• What do we notice about our timing? Or measuring?

Set up Cornell Notes on Right hand Side of Journal

• Title: Uncertainty

Take these notes on the right side of your drawn line

• Uncertainty of measurement is the doubt that exists about the result of any measurement– Last significant figure is uncertain on a measuring tool

– Uncertainty is =– Range = (biggest number – smallest number)– Average = (add data)/(amount of data)»Write in notes and on equation page

Which data set is better?

Set A: 8, 10, 12Set B: 4, 10, 16

Visually

8 1012

4 10 16

+2-2

+6-6

Tennis Ball and Tile

• Using your data find the average and uncertainty of your measurements.

– Uncertainty is =– Range = (biggest number – smallest number)– Average = (add data)/(amount of data)

• Write your averages and uncertainties on the large white board

Practice/Homework

• Averaging and Uncertainty Practice