and or not and equals in scratch and 3dpl

operators AND OR NOT && || ! == !=     what is = vs == if statements else statement elseif switch statements
First teach AND OR and NOT gates in http://logic.ly/demo
show how they work with simple switches and lightbulb
explain that in when we use an AND OR or NOT expression in any langauge, they eventually get put thru an AND OR or NOT gate in the CPU
(up to here it is done)

Second in scratch, make examples of AND OR and NOT,  perhaps make scratch say something depending on the resurlts of ADN NOT and OR
like for example say true when true AND ture   , say true when flase OR ture , say false when false of false
http://beta.scratch.mit.edu/projects/10067409/


explain variables and the difference between = and ==
have 3dpl draw a red cube if varibale a==5 else draw a green cube... change the value of a so that the user can see the operations taking place
Mention that in these examples, a green cube means true, and a red cube means false
Explain that // is a comment in C style languages and { opens a block of code } closes the block
3dpl Declarations:
qb("ACube",0,0,0);//makes a cube
var a=5;//in this case = is an assignbment, put 5 into a. change 5 to 3 to see the cube change from green to red
if(a==5) {//in this case == is a comparison, which is true if a is equal to 5 and is false if a is not equal to 5
  cl("ACube", Color.green);//colors a cube green
} else {
  cl("ACube", Color.red);//colors a cube red
}

explain !=, explain that the '!' sign is usually called NOT in C style langauges
3dpl Declarations:
qb("ACube",0,0,0);//makes a cube
var a=5;//change 5 to 3 to see the cube change from red to green
if(a==5) {//in this case != is a comparison, which is true if a is not equal to 5 and is false if a is not equal to 5
  cl("ACube", Color.green);//colors a cube green
} else {
  cl("ACube", Color.red);//colors a cube red
}

Third: in 3dpl   explain the same things, but now with C style syntax
and explain just plain not operator !
3dpl Declarations:
qb("ACube",0,0,0);//makes a cube
var a=1;//change 1 to 0 to see the cube turn from red to green
if(!(a==1)) { //when a is 1 (a==1) is true,   so by saying NOT ture,  it actually ends up being false, so we should get a red cube
  cl("ACube", Color.green);//colors a cube green
} else {
  cl("ACube", Color.red);//colors a cube red
}

&& AND
3dpl Declarations:
qb("ACube",0,0,0);//makes a cube
var a=1;//try a=0 and b=1, also a=1 and b=0, also b=0 and a=0
var b=1;
if((a==1)&&(b==1)) {//when a is 1 (a==1) is true,  when b is 1 (b==1) is true, so (a==1) AND (b==1) is true
  cl("ACube", Color.green);//colors a cube green
} else {
  cl("ACube", Color.red);//colors a cube red
}

|| OR
3dpl Declarations:
qb("ACube",0,0,0);//makes a cube
var a=1;//try a=0 and b=1, also a=1 and b=0, also b=0 and a=0
var b=0;
if((a==1)||(b==1)) {//when a is 1 (a==1) is true,  when b is 0 (b==1) is false, so (a==1) OR (b==1) is true
  cl("ACube", Color.green);//colors a cube green
} else {
  cl("ACube", Color.red);//colors a cube red
}