Links

You can see some games, quizes or fun facts at

• http://www.newbedford.k12.ma.us/elementary/gomes/stjohn/Subjects/Math/Probability/Probability1.html
  
• http://www.phschool.com/webcodes10/index.cfm?fuseaction=home.gotoWebCode&wcprefix=ank&wcsuffix=0099
  
• http://stattrek.com/Tools/ProbabilityCalculator.aspx
  

See webpages about porbability at

• http://www.mathgoodies.com/lessons/vol6/intro_probability.htmlhttp:/www.mathgoodies.com/lessons/vol6/intro_probability.html
  
• http://www.cut-the-knot.org/Probability/Dictionary.shtml
  
• http://en.wikipedia.org/wiki/Probability
  

Other programs used:

• See photos on 3rd post: Lesson 2: Finding theoretical probabilities with area models done with Macromedia Freehand and Fireworks.
  
• See the word document on Lesson 1.
  
• An excel document: http://www.mediafire.com/?sharekey=607a428801c59f4d5bf1f12f1ff3f30ae04e75f6e8ebb871
  

Bibliography

• I leaned with the Connected Mathematics Program book called "What do you expect?"
• Fotos from
  • http://stochastix.files.wordpress.com/2008/02/dice.jpg
    
  • http://education.yahoo.com/homework_help/math_help/solutionimages/mini6and7gt/10/1/1/mini6and7gt_10_1_1_8_90/f-spinner.gif
    
  • http://www.mathwire.com/images/200penny.jpg

Lesson 3: Testing the Law of large numbers

This lesson will be teached through problem solving.
A. We will test with the binomial probabilities of the toss of a coin. You can use the probability simulator of a graphic calculator, toss the coins or follow this link: http://www.subtangent.com/maths/flash/probsim.swf
1. Toss a coin 10 times. Record the outcomes and calculate the probability.
2. Toss it 10 times more. Add the outcomes to the ones of A.1. Calculate the experimental probabilities.
3. Now do it 50 times more and add the outcomes to the previous ones. Calculate the probabilities.
4. What is the theoretical probability of tossing a coin? Do you notice that each time that the experimental probabilities are closer to the theoretical?
B. Juan tossed the coin 20 times and got HTHTHHTTTHHTHTTTTTHT? What is the probability of getting heads? Tails?
1. What can Juan do to make the probabilities closer to one half? Why?

Lesson 2: Finding theoretical probabilities with area models

Juan is calculating the probabilities of getting two room A and B. For this he will use an are model in which the probabilities are shown by the fractions they represent. his result is shown at the left.

P(A)=1/4+1/8=2/8+1/8= 3/8

P(B)=1/4+1/4+1/8=4/8+1/8=5/8

Lesson 1:Theoretical Vs. Experimental Probabilities

Theoretical probabilities: probability obtained by analyzing a situation.

Example: The probability of getting 6 in normal dice is 1/6

Binomial probability: the probabilities of getting one out of two outcomes like that of tossing a coin.

Experimental probability: probability calculated from the results of an experiment.

Example: If you throw the number cube 12 times and your results are 1-3-2-1-1-1-4-2-1-3- 2-5 the experimental probability of getting a 1 is 5/12

Law of large numbers: states that are more times you do an experiment as closer the theoretical and experimental probabilities are.

Answer to the following exercises printing them following this link

http://www.mediafire.com/?sharekey=607a428801c59f4d5bf1f12f1ff3f30ae04e75f6e8ebb871

Project Introduction

Hi, I am Mauricio Bustamante. As a student I am very sucssessful in math. I do this project because our math and computers teachers assigned it to us. I will try to explain as much as I can in this blog. I learned with the Connected Mathematics Pearson program so you will see links to their pages and information found there.

For this project I will supose I am a math teacher that was hired by Edhelper.com to create a blog where I should teach probability and answer to the questions in the comments. The whole web will be my audience. This may include teachers, students and parents.

I will be using Microsoft Office Excel and this blog. Also I will use my knowledge in macromedia frehand to create some vissual exercises. I hope you enjoy my blog.