Group items matching
in title, tags, annotations or urlMath Forum: Ask Dr. Math FAQ: Integers, Rational Numbers, Irrational Numbers - 49 views
-
A rational number is any number that can be written as a ratio of two integers (hence the name!). In other words, a number is rational if we can write it as a fraction where the numerator and denominator are both integers. The term "rational" comes from the word "ratio," because the rational numbers are the ones that can be written in the ratio form p/q where p and q are integers. Irrational, then, just means all the numbers that aren7;t rational. Every integer is a rational number, since each integer n can be written in the form n/1. For example 5 = 5/1 and thus 5 is a rational number. However, numbers like 1/2, 45454737/2424242, and -3/7 are also rational, since they are fractions whose numerator and denominator are integers. So the set of all rational numbers will contain the numbers 4/5, -8, 1.75 (which is 7/4), -97/3, and so on. Is .999 repeating a rational number? Well, a number is rational if it can be written as A/B (A over B): .3 = 3/10 and .55555..... = 5/9, so these are both rational numbers. Now look at .99999999..... which is equal to 9/9 = 1. We have just written down 1 and .9999999 in the form A/B where A and B are both 9, so 1 and .9999999 are both rational numbers. In fact all repeating decimals like .575757575757... , all integers like 46, and all finite decimals like .472 are rational.
Digital Citizenship - 131 views
IXL - Year 7 Maths Practice - 12 views
Top 7 mistakes when implementing educational technology. « CLOUDUCATION - 4 views
7 Tips for Citing an App in MLA Format | edSocialMedia - 83 views
-
Clay Shirky famously pointed out that the problem in the information landscape today isn't necessarily that there is too much information but that our filters aren't any good. Students feel this problem acutely due to their perpetual crunch for time and lack of nuanced Google skills. So where does a responsible student go for reliable information she can use in an academic context?
Our Story | HappiPapi - 3 views
-
Approximately every 7-10 days participating teachers will get an email describing the new app being released. In the email there will be a link where interested teachers can order a free copy of the app in question. When you order an app, an install link will be sent to you a few days later. seems like it is mostly for Ipads for now but the idea is great.
Activity 7: Fair use, copyright, and introduction to using images | Edublogs Teacher Challenges - 82 views
Math Techniques and Strategies: 7 Web 2.0 Tools for Students - 223 views
7 Ways My Classroom Is Better Because I Connect | EdSurge News - 55 views
7 Assessment Challenges of Moving Your Course Online (Plus Solutions) | Faculty Focus - 68 views
7 Habits of Highly Effective Tech-leading Principals -- THE Journal - 96 views
-
The conventional wisdom in education is that any school reform--be it curriculum, instruction, assessment, or teacher professionalism--is most likely to take hold in schools that have strong leadership. The same holds true for technology. Any educator will tell you the most successful implementation of technology programs takes place in schools where the principal sees him or herself as a technology leader.
7 Fun Ways to Use QR Codes In Education - Edudemic - 120 views
instaGrok.com - 139 views
-
An innovative search engine built for education. Search via concept map, save searches in a personal journal. Great concept to check out.
- ...4 more comments...
-
"To understand thoroughly and intuitively" - A search tool that show the inter-relatedness of a topic and allows users to graphically see the information relations.
-
Research any topic with an interactive concept map, that you can customize and share. Free personal and low cost educational accounts.
« First
‹ Previous
101 - 120 of 409
Next ›
Last »
Showing 20▼ items per page