# # 8: Binary Code: Numbers

### To talk to computer your need to speak its language.  One such language, or code, is binary.  It works by using a system of 2 symbols, base 2, often made up of 0’s and 1’s.  In this 2nd binary code STEAM mini spark learn about binary code: numbers

1. Set up your STEAM mini spark recording page: #7: Binary Code: Numbers

2. The base 2 number systems (binary) requires you to be familiar with the powers of 2. Copy these two charts on to your recording page.

3. Watch this teaching video to 3:37 to get started reading numbers written in binary. Pause the video at 1:28 and write the chart on your recording sheet.  He does the addition for you, but still write down all of the numbers as he goes and add them together to make sure it is 155.  Scroll to the bottom of this post to see that you have all of the correct numbers.  Watch until 3:37, taking a few more notes as you watch.

4. Make a table like this on your recording sheet. Then look up at the top to find age on the graphic for this mini spark. Fill in this table with the 1s and 0s.  You can put 0s in for 128 and 64 or just leave them blank.

5. Use the process that the teacher used in the video. What birthday is the person celebrating? Record all of your math on your recording page.

6. Scroll to the bottom of this post to check your answer. If you have the answer correct, put a star on your recording sheet. Correct your work if necessary.

7.  Watch this video to see how to write base ten numbers in base 2. Pause at 27 seconds and draw the horizontal table on your recording page.  Then follow along with the teacher and fill in your chart. What is 347 in binary?

8. Learning the process of converting from base ten to base 2 and base 2 to base 10. This STEAM mini spark was an introduction. OPTIONAL: If you want to learn more and practice you can visit the Khan Course-Binary Numbers.

9. Share your STEAM mini spark recording page with your teacher/EY coordinator.

Check out STEAM Mini Spark # 7: Binary Code: Names

From step 3: You should have 128 + 16 + 9 + 2 + 1 = 155