October 6, 2010, IB Math Studies.

Bell Ringer:

A box container has a width of 10, a length of 6 and a height of 2.

Given the formula

v=l*w*h

What is the range of possible values for the volume?

Answer:

smallest possible value- 1.5cm*5.5cm*9.5cm=78.375cm³

^{largest possible value- 2.5cm*6.5cm*10.5cm=170.625cm3}

^{Range*140cm3-78.375=61.625cm3}

^{there is an error in each specific measurement.}

^{actual error/actual measurement* 100=44%}

^Agenda:

^{I. Bell Ringer}

^{II. Homework Review}

^{III. Error & Percentage Error}

^Objective:

^{Students will quantify the error introduced by measuring, estimating, or rounding.}

^{Big Picture:}

^{Tools used in measurement are limited in their accuracy.}

^{basically you find the actual measurement and your actual error you divide it and multiply it by 100 to get your percentage of the actual error.}

^Homework:

^{Finish the second part of the investigation ( page 61. Investigation #3. #3,4, & 5)}

^{Question: Did you truly understand the concept of today's lesson?}