1. Binary: Counting with 1s and 0s

2. Exponents review
Exponents show a number multiplied by itself a certain number of times.
2x is the same as 2 times itself x times. It is read as 2 to the x power.
Examples:
22 is the same as 2x2
45 is the same as 4x4x4x4x4
21 is the same as 2
Note:
Any number to the 0th power is equal to 1.

3. What is Binary?
Binary is just a different way to count numbers but only using 1s and 0s. Usually you count up to 1, 2, 3, 4...8, 9 and when you get to 9, you go to 10 which is adding a new placeholder. You have a ones spot and a tens spot.
_1_ 10
_0_ 1
For Binary, you can only use 1s and 0s so when you get to 1, you have to add a new placeholder and put in a zero.
So it starts at 0 = 0, then 1 = 1. Instead of using 2, we can only use 1s and 0s So 2 = 10. And then 3 = = 100.
_1_ 2
_0_ 1

4. More Binary value: 8 4 2 1 Power of 2 23 22 21 20 Binary digit
= 11
1011 in binary is equal to 11 in decimal
All numbers greater than or equal to zero.

5. Examples 0111 in binary = (0 x 23) + (1 x 22) +( 1 x 21) + (1x 20)=
= 7
in binary
= (1 x 27) + (0 x 26) + (1 x 25) + (1 x 24) + (1 x 23) + (1x 22) + (1 x 21) + (1 x 20) =
= 187

6. Binary Here is a link to how another teacher taught her student binary
binary_numbers.pdf