Math Topics, Problem Solutions and Teaching Ideas

NEW VIDEO (CLICK HERE)
on YOUTUBE about
FINDING EQUATION of a LINE

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What is the PROBABILITY of SUM 7
when two dice are rolled?

Please DOUBLE click
on video to enlarge!

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(Mean Median Mode)

Please DOUBLE click
on video to enlarge!
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A video dealing in Calculus limits

http://math.knepfle.com/take_to_the_limit.html

1	VIDEO: when to simplify a radical
2	VIDEO: Roots and Absolute Values
3	VIDEO: Adding Radicals
4	VIDEO: Two Ways to simplify Radicals with Fractions
5	VIDEO: using Conjugates
6	VIDEO: another Conjugate
7	VIDEO: on Slope and y-intercept
8	VIDEO: Using Tree Diagrams
9	VIDEO: Intro to "i"
10 If you have a topic that you would like to see in the video form that I use, please leave me a COMMENT at the bottom!	VIDEO: Split or Multiply Radicals

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1) Suppose we wish to arrange 5 people {a, b, c, d, e}, standing side by side, for a portrait. How many such distinct portraits (“permutations”) are possible?
2) {a, b, c, d, e} arranging 5 objects, in such a way that “a” is always first. How many different orders count as being distinct.
3) Now suppose we start with the same 5 people {a, b, c, d, e}, but we wish to make portraits of only k = 3 of them at a time. How many such distinct portraits are possible?
4) Finally suppose that instead of portraits (“permutations”), we wish to form committees (“combinations”) of 3 people from the original 5. How many such distinct committees are possible?
5) Suppose we wish to arrange 5 people {a, b, c, d, e} around a circular table. How many such table arrangements are possible?

I have blogged a few puzzles
that are appropriate for 6th grade on up.

When you go to the blog,
you may want to avoid looking at the answers

until you have given yourself
(or your kids) a chance to try them.

Have fun!

http://mathyoucancounton.blogspot.com/