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Model Activity - Contenido educativo
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NASA Connect segment involving students in an activity exploring the design of a paper scale model of the X-33. The objectives of the activity involve measuring the linear dimensions of the model and comparing them, and computing a scale factor.
Welcome to Prescott Central Middle School in Littleville, Tennessee.
00:00:00
NASA Connect asked us to show you the student activity for this program.
00:00:06
Under the guidance of our teachers, Marlon Weaver, Alicia Ray, and Ronnie Maness,
00:00:10
we will go through the steps you will use to build the paper scale model of the X-33 Advanced Technology Demonstrator.
00:00:16
In this activity, we will also measure linear dimensions of the model,
00:00:23
compare these dimensions to the actual dimensions of the X-33, and compute a scale factor.
00:00:27
To help you understand about proportionality in X-planes, go to the NASA Connect website.
00:00:33
Mr. Weaver reviewed what the lines and labels on the folding pattern mean,
00:00:40
identified the faux lines, cut lines, tabs, and alignment dots.
00:00:44
He also talked to us about the parts of the X-33 vehicle.
00:00:49
Before we begin, here are the materials you will need for the activity.
00:00:53
Cardstock or heavy paper, pencils, scissors, rulers, glue, and calculators.
00:00:57
After you've gotten your materials together, we will begin the activity by constructing the X-33 model.
00:01:06
Cutting, folding, and assembling the model will take at least one full class period, or about 45 minutes.
00:01:12
Begin cutting out the model X-33 pattern found on sheet 1.
00:01:20
It is important that the cutting and folding of your X-33 is accurate,
00:01:25
so that the parts will fit together and fold into an aerodynamic model.
00:01:29
Crease along all the dashed lines, making sure that faux lines and other markings are on the inside.
00:01:34
For neater results, place a ruler along the faux line and hold it down tightly.
00:01:40
Then slide your finger under the paper and lift it up against the ruler.
00:01:45
Cut the four slots for canted and vertical fins, being careful not to cut the faux lines.
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Glue the back side of tab A at the edge which says glue A here.
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Repeat for tabs B and C.
00:02:01
Fold up the nose and tuck the flaps into the front of the X-33 and push it in until it stays.
00:02:04
Now you're ready to cut out the canted fins found on pattern sheet 2.
00:02:11
Fold each fin in half along the middle and fold back the tabs.
00:02:16
Put the glue on the top side of the tabs instead of the bottom before inserting them in the slots.
00:02:20
You can close the back of your model now, but don't glue it yet.
00:02:26
Cut out the body flaps and attach them under the back of the X-33.
00:02:30
Last, cut out the engine, glue it, and attach it to the back of the model.
00:02:35
Glue your model closed and now you're ready for measurements.
00:02:39
Find the measurements of the full size X-33 drawings in a classroom copies
00:02:42
and record them in column B of your Find the Scale Factor worksheet.
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Each student should fill out the data sheet by determining the corresponding exterior dimensions
00:02:52
of the scale model of their X-33 and recording them in column C.
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Write the ratio of the measurements in column D, making sure that the units are the same.
00:03:03
Using the results, you can now calculate the scale factor,
00:03:08
which is the measurement of the full size object divided by the measurement of the model.
00:03:12
When all the data is calculated and entered in column E,
00:03:17
you are ready to find the average scale factor by adding the scale factors in column E and dividing by 3.
00:03:20
Record your result in the blank.
00:03:27
Now that we understand the concept of proportionality,
00:03:29
we're going to test whether the model is a true scale model.
00:03:32
Phew!
00:03:39
Great job, guys!
00:03:41
Hey, let's analyze the data by reviewing the results of the activity
00:03:43
and responding to the following questions.
00:03:47
What can you learn from building a model that would be difficult to learn otherwise?
00:03:51
How can a model be misleading?
00:03:57
Pretend the scale factor is 140.
00:04:01
Now let's apply this scale factor to a simple problem.
00:04:04
Decorate the side of your paper model with the word NASA, like this.
00:04:08
Using the scale factor of 140, how tall would the letters be on the X-33?
00:04:13
Are they bigger than you?
00:04:19
- Valoración:
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- Idioma/s:
- Materias:
- Matemáticas
- Niveles educativos:
- ▼ Mostrar / ocultar niveles
- Nivel Intermedio
- Autor/es:
- NASA LaRC Office of Education
- Subido por:
- EducaMadrid
- Licencia:
- Reconocimiento - No comercial - Sin obra derivada
- Visualizaciones:
- 288
- Fecha:
- 28 de mayo de 2007 - 16:52
- Visibilidad:
- Público
- Enlace Relacionado:
- NASAs center for distance learning
- Duración:
- 04′ 21″
- Relación de aspecto:
- 4:3 Hasta 2009 fue el estándar utilizado en la televisión PAL; muchas pantallas de ordenador y televisores usan este estándar, erróneamente llamado cuadrado, cuando en la realidad es rectangular o wide.
- Resolución:
- 480x360 píxeles
- Tamaño:
- 26.17 MBytes
