Math1125DayTwo.notebook
Math 1125 August 23, 2012
Fractions from the Quiz
Simplify:
Activity : A Place of Value
8/3 ­ 5/4=
Math1125DayTwo.notebook
August 23, 2012
A Place of Value Activity:
What are the place values if you work in different bases? How can you count in them?
Base 6
Base 3
Math1125DayTwo.notebook
August 23, 2012
A Place of Value Activity:
Find the decimal equivalent of 134 (base 6)
Find the decimal equivalent of 134 (base 7)
Evaluate x2+3x+4 when x = 10, when x=6 and when x=7. Explain what you find.
How fast can you count in Binary?
Math1125DayTwo.notebook
August 23, 2012
Fun Videos about Place Value
Abbott and Costello Math
http://www.youtube.com/watch?v=CIJ0CikId8E
http://vihart.com/blog/binary­hand­dance/
Activity: Modeling Integers
One Example of a way to explaing adding with positive and negative numbers
http://nlvm.usu.edu/en/nav/frames_asid_161_g_2_t_1.html?from=topic_t_1.html
Use this idea to explain why 8 + (­3) = 5. or 7 + (­11) = ­4
Math1125DayTwo.notebook
August 23, 2012
Another example that shows how to subtract using positives and negatives
http://nlvm.usu.edu/en/nav/frames_asid_162_g_2_t_1.html?from=topic_t_1.html
Use this example to explain why 4 ­ (­3) =7
Can you think of other ways to explain that "subtracting a negative is the same as adding a positive"?