Binary, Decimal and Hexadecimal Numbers
Decimals To understand Binary and Hexadecimal numbers, it is best to know how Decimal Numbers work. Every digit in a decimal number has a "position", and the decimal point helps us to know which position is which. The position just to the left of the point is the "Units" position. Now, this is just a way of writing down a value. The Decimal Number System is also called "Base 10". And there are 10 symbols (0,1,2,3,4,5,6,7,8 and 9), but notice something interesting: there is no symbol for "ten". "10" is actually two symbols put together, a "1" and a "0": In decimal you count "0,1,2,3,4,5,6,7,8,9,..." but then you run out of symbols! So you add 1 on the left and then start again at 0: 10,11,12, ... Counting with Different Number Systems But you don't have to use 10 as a "Base". Example: In binary you count "0,1,..." but then you run out of symbols! So you add 1 on the left and then start again at 0: 10,11 ... See how you would count dots using Bases from 2 to 16 in this little demonstration:
Binary Game
Skip to Content | Skip to Footer Cisco Binary Game The Cisco Binary Game is the best way to learn and practice the binary number system. It is great for classes, students and teachers in science, math, digital electronics, computers, programming, logic and networking.
19 Kick-Butt Tools for ELearning
Everyone likes nifty tips, tricks, and tools – so how about 19 of them! Here in the United States, Monday is memorial day, so if you’re celebrating, perhaps right before your afternoon food-coma you can take a look at these incredibly useful tools that you may find of use when you’re working on your next elearning project. Many of them are free! Some of them you may have heard of before, but sometimes a reminder never hurts: 1. GreenShot: a perfect alternative to Snagit. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 19.
Writing Topic Sentences
A paragraph is unified when every sentence develops the point made in the topic sentence. It must have a single focus and it must contain no irrelevant facts. Every sentence must contribute to the paragraph by explaining, exemplifying, or expanding the topic sentence. In order to determine whether a paragraph is well developed or not, ask yourself: "What main point am I trying to convey here?" (topic sentence) and then "Does every sentence clearly relate to this idea?" There are several ways in which you can build good, clear paragraphs. Paragraph Development by Detail This is the most common and easiest form of paragraph development: you simply expand on a general topic sentence using specific examples or illustrations. Work tends to be associated with non-work-specific environments, activities, and schedules. The topic sentence makes a general claim: that school work tends not to be associated only with school. Paragraph Development by Comparison and Contrast Written by Dorothy Turner
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