Throwing pictures:

<--That, Is Davide

Your Welcome Davide :)

Science Class May 19

In Class we did Independent Variables, and Dependent Variables, Controlled Variables, and Uncontrolled Variables. Iv's, Dv's, Cv's, And Uv's.

A Independent Variable: Is the change in an Experiment.

For Example: Changing Tail-Gate up or down, or the amount

A Dependent Variable: Is the things I Observe in an Experiment

For Example: Measurements at the end, or Conclusion

A Controlled Variable: Is What I keep the same in An experiment

For Example: ALWAYS the same Scientist, and or other things like same Ruler

A Uncontrolled Variable: Is errors, or unexpected things that could have gone wrong.

For Example: Like Weather or Human error's.

After we did that we Began our new lab with airplanes... You can find the packet for this lab at (zagreb.ceesa.net) Requires Login...

If you want to make an Airplane similar to the one we are using in class below are the instructions...

Directions for Making a Basic Paper Airplane

1. Start with an A4 piece of paper.

2. Fold the paper in half length-wise. (You should end up with a long narrow piece of paper.)

3. Open the paper again.

4. Take one corner and fold it towards the middle. (The folded triangle should be a right isosceles triangle).

5. Do the same thing with the other corner.

6. Fold the airplane in half along the fold you made in Step #2.

7. Take one edge that is parallel to the fold you made in Step #2 and fold it down so it meets this fold. (This makes the wings!)

8. Do the same thing on the other side.

9. Add two paperclips to the bottom of the airplane.

We made a few of these in Class and through them in the hallway..

Some of our throwing pictures are at the top..

**** Extra Credit Opportunity - due Friday, May 28th at 1600 - watch a Myth Busters episode of your choice - in an email to Ms. D. (dani.dipietro@aisz.hror ddipietro.aisz@gmail.com) you need to list the Purpose Question, your hypothesis, the IV, DV, 5 - cvs, 5- uvs, and whether its been Busted/Plausible/Confirmed and why!****

Next Scribe is.........Drum roll please................................................Indra!!

Variables

Hey readers!! Today in science class, we discussed VARIABLES and how to conduct aFAIR TEST!!! First of all, a fair test is a test that is re-tested three times to make sure that it is right, and in each of the times that you re-test it, you can only change one variable. Most of you readers, at this point, might be asking yourselves: "What the heck is a variable???" Well, a variable is anything that the scientist can change in order to conduct a fair test. There are many different types of variables:

Independent Variable (IV) which is anything the scientist testing the experiment can change,

Dependent Variable(DV) which is what the scientist measures and the actual result,

Controlled Variable (cv) which are all of the things a scientist needs to keep the same, and

Uncontrolled Variable (uv) which are all of the errors that the scientist can have made during the testing.

We watched again a Myth Busters episode were they made an experiment on trucks: do they go farther with the tailgate up or down? First, we needed to write a hypothesis on which truck we thought would go farther: the truck with the tailgate up or the truck with the tailgate down. We figured out that the truck with the tailgate up went farther, since the wind got blocked into the back of the truck, forming a "circle", so the wind coming from the top of the truck didn't fall on the truck, not provoking a drag. Instead, in the truck with the tailgate down, the was no "circle" in the back of the truck, which made the wind fall on the tailgate, provoking a big time drag. After the Myth Busters, we all answered some practice questions for a variables sheet.

Also, for the sixth grade readers, our only homework is (of course) the blog, and the lab!!!

Next scribe is...........DUNCAN!!!!!!

P.S. I couldn't find the exact video we watched in class, but here is the Myth Buster's second try for the same experiment, since the fans complained about their science not being accurate......enjoy!!

http://www.youtube.com/watch?v=r3aqHbD-O9E

Variables

Today in science class we did numerous things. The first was that we looked over our shoe sheet ,we got our labs and quiz back.Then we talked about variables. Ms.D. gave us a sheet that was about variables. For HomeWork we have to read the other two and a half pages. You can find the sheet at the following link: http://zagreb.ceesa.net/mod/resource/view.php?id=3052
Doing a Fair Test: Variables for Beginners
It is important for an experiment to be a fair test. You conduct a fair test by making sure that you change one factor at a time while keeping all other conditions the same.
For example, let's imagine that we want to measure which is the fastest toy car to coast down a sloping ramp. If we gently release the first car, but give the second car a push start, did we do a fair test of which car was fastest? No! We gave the second car an unfair advantage by pushing it to start. That's not a fair test!
The only thing that should change between the two tests is the car; we should start them down the ramp in exactly the same way. Let's pretend we're doing an experiment to see if fertilizer makes a plant grow to be larger than a plant that doesn't receive fertilizer. We put seeds of the same kind in three pots with fertilizer and rich soil. But, we run out of soil so we put the seeds without fertilizer in three pots filled with sand. We put all six pots in the same location and water each one with the same amount of water every other day. The plants with soil and fertilizer grow to be much larger than the ones grown in sand without fertilizer. Is that a fair test of whether fertilizer makes a plant grow to be larger? No! We changed two things (type of soil and fertilizer) so we have no idea whether the plants with fertilizer grew to be larger because of the fertilizer or whether
the other plants were stunted by being grown in sand. It wasn't a fair test! All of the plants should have been in the same kind of soil,
Conducting a fair test is one of the most important ingredients of doing good, scientifically valuable experiments. To insure that your experiment is a fair test, you must change only one factor at a time while keeping all other conditions the same.
Scientists call the changing factors in an experiment variables.
Understanding variables
Malcolm used his grandmother's recipe to bake a loaf of bread.

Bread:

Grandma’s favorite bread

1 ½ Cups warm Water

1 package dry yeast

1 teaspoon salt

2 tablespoons sugar

2 tablespoon melted butter

3 I /2 cups flour


Mix all of the ingredients together., and knead :Cover
the dough, and let it rise for 2 hours. Put the dough in
a greased pan, and bake at 400" F for about 35 minutes.
Unfortunately, Malcolm's bread collapsed while it was cooking.
"Shucks!" he thought, "What could have gone wrong?" What
could Malcolm change the next time he makes the bread?
Two examples are given for you:
- He could add more salt,
- He could take the bread out of the oven sooner.

The next scribe is Davide!!!!!!!!!!!!!!