Tech Powered Math: News, Graphing Calculator Reviews, Math Education Apps, Learn Math. Teacheraccount. Cyberchase . Math is Everywhere. Combinations and Permutations. What's the Difference?
In English we use the word "combination" loosely, without thinking if the order of things is important. In other words: So, in Mathematics we use more precise language: In other words: A Permutation is an ordered Combination. Permutations There are basically two types of permutation: Repetition is Allowed: such as the lock above. 1. These are the easiest to calculate. When we have n things to choose from ... we have n choices each time! When choosing r of them, the permutations are: n × n × ... (In other words, there are n possibilities for the first choice, THEN there are n possibilites for the second choice, and so on, multplying each time.) Which is easier to write down using an exponent of r: n × n × ... Example: in the lock above, there are 10 numbers to choose from (0,1,...9) and we choose 3 of them: 10 × 10 × ... (3 times) = 103 = 1,000 permutations So, the formula is simply: 2. In this case, we have to reduce the number of available choices each time.
Do you see? 1. 2. Helloooooo Multiplication. Yup, you read it right!
It's that time of year again in 3rd grade when we leave place value, addition and subtraction to begin multiplication! So last Thursday we had a review day filled with addition, subtraction and place value centers! Then we had our test Friday....which I still need to grade before tomorrow:( Tomorrow is the beginning to multiplication and I was trying to think of a new approach to introducing it. So I found this on Pinterest and was so excited about it...but the link was broken:( Well, I knew I wanted the kids to have this as a graphic organizer in their math notebook! I really like how it turned out! While I am on the topic of multiplication, I have always used songs to get the kids to remember their facts quick! These are a part of my Sweet Multiplication Facts Unit I plan on uploading just the songs to TPT and TN today! Would you like EVERYTHING you saw here today for FREE?
Good Luck! Mathematics - Caren Sorrells and Kim Hamilton / Online Resources for Connected Math Books. Web Links. Project M3. Untitled. Grants and Funding. The following websites are possible sources to fund Professional Development for educators.
This is not a comprehensive list. You may also check with your district and state for any local funds that may be available. The Actuarial Foundation Through its Advancing Student Achievement program, the Actuarial Foundation awards monetary grants to schools and nonprofit groups throughout the United States and Canada. The basic requirement for schools or groups seeking funding is that they develop a viable mentoring program involving actuaries in the teaching of mathematics to children in private or public schools. Eligibility: Schools and nonprofit organizations in the U.S. and Canada Value: Up to $25,000 total The Braitmayer Foundation The Foundation is interested in K-12 education throughout the United States.
Curricular and school reform initiatives. DuPont Education Commitment eSchool News Online K-20 Technology Solutions Center. Funding for Teachers Grants Alert NCTM Grants and Awards The U.S. Product Catalog.