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Two groups of programming blocks have the correct shape

Unless I missed seeing some others, there are only two buttons at the top center of Image 4 that expose blocks having the required shape:

  • Sensing (light blue)
  • Operators (green)

In this case, we will select and use a block from the light blue Sensing group. (We will use programming blocks from the green Operators group in a future module.) All of the blocks belonging to the Sensing group are shown in Image 12 .

Image 12. programming blocks belonging to the sensing group.

Missing image.
Image 12. Programming blocks belonging to the Sensing group.

Will use the touching block

We will use the block labeled touching followed by a pull-down list and a question mark.

The items that appear in the pull-down list depend on the sprites that have been added to the program. Forthis program, that list consists of the following choices when the basketball has been selected for programming:

  • mouse-pointer
  • edge
  • LeftBeachball
  • RightBeachball

The top two choices are always there. The remaining choices depend on the sprites that have been added to the program and the sprite that has been selected for programming.

(Note that the Basketball sprite does not appear in the above list because it was selected for programming when I examined the list. In otherwords, you can't determine that the basketball is touching itself.)

Go back and examine the script

Going back to the bottom script in Image 8 , you can see that I dragged two copies of the if block shown in Image 11 into the rightmost panel andconnected the blocks as shown in Image 8 . Then I dragged two copies of the touching block from the Sensing group shown in Image 12 , and dropped each of those blocks into the corresponding locations in the if blocks in Image 8 .

Then I selected RightBeachball from the pull-down list for one of the touching blocks and selected LeftBeachball from the pull-down list for the other touching block.

Conditions have been established - need actions

At this point, I had the conditions for the two selection structures established, but I hadn't yet specified the actions to be taken when one or theother of the conditions is found to be true.

Programming blocks belonging to the Motion group

Image 4 shows all of the programming blocks that are exposed by clicking the Motion button at the top center of Image 4 .

You saw three of the programming blocks from Image 4 being used in Image 6 , Image 7 , and immediately below the top tan block in the bottom script in Image 8 . Now we need to use another of the programming blocks from Image 4 .

Turn around and face the other way

Recall that the blue point in direction block in the top script in Image 8 causes the basketball to turn to face to the right when the user clicks the green flag.

The two turn blocks in the bottom script in Image 8 cause the basketball to rotate around its center by 180 degrees. This, in turn,causes it to face in the opposite direction from the direction that it was previously facing. (It also turns it upside down, but that doesn't matter for a round basketball.)

Questions & Answers

anyone know any internet site where one can find nanotechnology papers?
Damian Reply
Introduction about quantum dots in nanotechnology
Praveena Reply
what does nano mean?
Anassong Reply
nano basically means 10^(-9). nanometer is a unit to measure length.
do you think it's worthwhile in the long term to study the effects and possibilities of nanotechnology on viral treatment?
Damian Reply
absolutely yes
how to know photocatalytic properties of tio2 nanoparticles...what to do now
Akash Reply
it is a goid question and i want to know the answer as well
characteristics of micro business
for teaching engĺish at school how nano technology help us
Do somebody tell me a best nano engineering book for beginners?
s. Reply
there is no specific books for beginners but there is book called principle of nanotechnology
what is fullerene does it is used to make bukky balls
Devang Reply
are you nano engineer ?
fullerene is a bucky ball aka Carbon 60 molecule. It was name by the architect Fuller. He design the geodesic dome. it resembles a soccer ball.
what is the actual application of fullerenes nowadays?
That is a great question Damian. best way to answer that question is to Google it. there are hundreds of applications for buck minister fullerenes, from medical to aerospace. you can also find plenty of research papers that will give you great detail on the potential applications of fullerenes.
what is the Synthesis, properties,and applications of carbon nano chemistry
Abhijith Reply
Mostly, they use nano carbon for electronics and for materials to be strengthened.
is Bucky paper clear?
carbon nanotubes has various application in fuel cells membrane, current research on cancer drug,and in electronics MEMS and NEMS etc
so some one know about replacing silicon atom with phosphorous in semiconductors device?
s. Reply
Yeah, it is a pain to say the least. You basically have to heat the substarte up to around 1000 degrees celcius then pass phosphene gas over top of it, which is explosive and toxic by the way, under very low pressure.
Do you know which machine is used to that process?
how to fabricate graphene ink ?
for screen printed electrodes ?
What is lattice structure?
s. Reply
of graphene you mean?
or in general
in general
Graphene has a hexagonal structure
On having this app for quite a bit time, Haven't realised there's a chat room in it.
what is biological synthesis of nanoparticles
Sanket Reply
what's the easiest and fastest way to the synthesize AgNP?
Damian Reply
types of nano material
abeetha Reply
I start with an easy one. carbon nanotubes woven into a long filament like a string
many many of nanotubes
what is the k.e before it land
what is the function of carbon nanotubes?
I'm interested in nanotube
what is nanomaterials​ and their applications of sensors.
Ramkumar Reply
how did you get the value of 2000N.What calculations are needed to arrive at it
Smarajit Reply
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Source:  OpenStax, Teaching beginners to code. OpenStax CNX. May 27, 2013 Download for free at http://cnx.org/content/col11498/1.20
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