New takes on kites!

8 03 2010

Here are the kites I was talking about earlier. These kites are a little different from the traditional kites, but will fly just as well and are a little more interesting.

If you have a lot of time and want a challenge, try making this tetrahedral kite:

Supplies:

60 long, straight drinking straws
Scissors
Kite string or thin, strong string that will stay knotted, at least 30 feet
4 wooden dowels, 1/8 diameter
Big sheet of paper
Newspaper, cellophane, or plastic bags
Tape
A pen/marker

1. Cut your string eight times as long as one of your straws.

2. String three straws together by pushing the string through the straw with a dowel. Tie the straws into a triangle. Leave two inches of string at the end. Then use the longer piece of string and pull it through two more straws and tie a knot so it looks like this:

3. Use this frame to make a pattern. Place the frame on top of the sheet of paper and trace around it, leaving about a one inch around the edge. Cut it out and use it to make ten cutouts of the newspaper, cellophane, or plastic bags, whatever you would like your kite’s shell to be.

4. Use the leftover string in the frame and add another straw onto the triangles. This makes a 3-d triangle, which will be one cell of the kite. Take the frame and place it on one of your cutouts. Attach with tape.

The kite frame.

Covering the frame with the shell.

5. Make 9 more cells. Attach all the cells together in the shape of a triangle with the leftover bits of string. To make them more secure, you can tape the knots and excess string to the inside of the cells.  Make sure all sides covered with the cutouts are facing the same direction.

The first layer should have 6 cells, the second should have 3, and the top layer should only have 1 cell.

6.  Cut off excess string between the cells. Along the leading edge of the cells tape your dowels to the straws for reinforcement.  Then cut two small holes on the top cell’s and lower cell’s shell, each in the middle of the cells. Tie the string around the dowels and straws and secure with tape. Then take the string you want to fly the kite by, and tie it one-third of the way down from the top of the kite. Wrap the excess around the left over dowel. It’s now ready to fly!

A kite ready for flight!

To make a kite out of recycled materials and for almost no money, try this:

Supplies:

Plastic shopping bag
Two thin wooden sticks
Duct tape
String

1. Take the two sticks and lay one other the other perpendicularly, so it looks like a + sign. Then take one piece of the duct tape and place it over where the sticks intersect.

2. Attach the 4 ends of the sticks to the bag with the tape. Then attach the string to another piece of tape and stick that piece to the bag of the center tape piece. Now it’s ready to fly.

I love my new kites and can’t wait to fly them at the festival or during the next few months.  I hope you go out and fly some too!





Make your own kite!

8 03 2010

This Sunday is the Kite Festival. To be prepared, I found a few kites to make. You can make them for anytime, and usually spring is the perfect time to fly a kite.

For a traditional kite, try this:

Supplies:

String or yarn, at least 10 feet
Tape
One large sheet of strong paper (I used recycled wallpaper)
Markers or crayons
Two thin wooden sticks, one 1 foot long, the other 8 inches long
Something to wrap your string around when flying

1. Use the two sticks to make a cross, with the 8 inch stick lying horizontal on the 12 inch stick. Make sure the 12 inch stick is in the center of the 8 inch stick. My sticks were a bit short so I taped a few together to make them the right lengths.

2. Wrap the string around the stick and make sure it is bound strong. You can use the tape here to reinforce the string.

3. Cut notches on the ends of every stick for the string to catch. Then starting from the bottom, take your string and fit it into the notch at the end of the stick. Continue all the way around the frame. Use the tape on the ends of the sticks to prevent the string from moving.

4. Decorate you paper if you please. Then place the sticks on top of the paper and cut around the  string frame, leaving about an inch around the perimeter. Then fold the edges over the string frame and hold down with the tape.

5. Tie a spring around the middle of the frame where the two sticks intersect. Make sure the string is long enough that the kite can have room to fly. Wrap the excess string around something easy for you to hold. I used a strong straw. Now try flying it!

Check back here later for some more kites you can make at home!





Bessie Coleman

22 02 2010

For Black History Month, we would like to once again feature an African-American who was at the forefront of science and technology.

Bessie Coleman.

Elizabeth “Bessie” Coleman, born in Texas, was the first person of African-American descent to become a licensed pilot in 1921.  She was also the first American to hold an international pilot license.  She is now part of the National Women’s Hall of Fame.

Bessie Coleman is admired by many, including the first African-American woman in space, Mae Jemison.  In the book Queen Bess: Daredevil Aviator, Mae Jemison said that Bessie Coleman “serves as a model to all humanity: the very definition of strength, dignity, courage, integrity, and beauty.”

To commemorate Bessie Coleman, you can make your own flying mechanism that shows how a helicopter works.

Spinners

Supplies:

Strips of paper 6-8 inches long and 1/2-1 inch wide
Scissors

Instructions:

1. Cut notches in the paper, one on each end, on opposite sides.

2. Assemble by inserting the notches into each other.

3. Hold the spinner high in the air and drop it. See what it does as it’s going down towards the ground.

4. Keep trying with different lengths and widths of the strips of paper. Note what happens with different sizes.

Spinners work when air is pushing on the flat sides of the strips of paper. When the flat side of the paper strip is parallel to the ground, the spinner drifts down like a flat piece of paper.  If the Spinner tilts so that the flat side of the strip is at an angle to the ground, the paper strip gets a sideways push, just like the blade of a helicopter, sending the Spinner spinning. Each time the flat strip comes around, it gets another push and goes for another spin.

For more information and activites with air, click here.





Engineering Saturday: Marble Drag Racers

16 11 2009

The UT engineering students came to the Museum again, this time to race paper cars using marbles!

rocket car racer!

After building a car out of paper and attaching toy wheels, the UT students had the young engineers test the drag racers out. Each kid rolled a marble down a ramp and watched how far the racer travelled when the marble shot off the ramp and into a pocket built into the racer. The momentum from the marble pushed the drag racers forward! 

building her drag racer

The students provided a task sheet with the engineering design process to get you thinking like an engineer as you design your marble drag racer. They also included some helpful hints to think about as you test your drag racer.

working on his drag racer

Does your racer move farther if you roll more than one marble? Do you think it would be easier for the racer to roll on tile floor or carpet floor? What about a racer with wheels and a racer with no wheels?

Race your cars with a friend and see whose drag racer goes the farthest!

11-14-09 041





Engineering Saturday: Operation Game

12 11 2009

While Natural Sciences was going on, engineering students from UT also came to make toys with electric circuits, similar to the Operatation game!

playing Operation

hard at work!

After coloring pictures of Spongebob Squarepants, Mickey Mouse, Winnie the Pooh, and others, young engineers connected wires to  batteries and resistors to create an electric circuit. By touching their tweezers—covered in aluminum foil—to other aluminum foil spots on their game boards, a buzzer would go off and the characters’ noses would light up!

Why aluminum foil? Aluminum foil is a very conductive material. Conductivity is the measure of a material’s ability to conduct electricity. Since aluminum foil is considered a highly conductive material, an electric current can easily pass through it.

Interested in making your own Operation game?

The students provided the instructions for the circuit board, which you can download here.

Things you’ll need:

-Coloring book page or your own illustration

-Cardboard big enough for the illustration

-Aluminum foil

-Tweezers

-9 volt battery holder

-360 ohm resistor (Radio shack)

-Standard LED,  for the light-up nose (Radio Shack)

-Piezo Buzzer (AmericanPiezo.com, #KPI – 2210-L)





Engineering Saturday: Balloon Powered Cars

2 11 2009

Engineering students from UT came on Saturday to show us how to make balloon powered cars!

balloon powered car

Air from the balloons shot out backwards, which pushed the cars forward. The cars with the bigger balloons tended to travel a greater distance because there was more air to propel the car farther.

ballon powered car in the making

The students were nice enough to provide the instructions so you can make one at home! Click here to download the instructions as a Word document.





Engineering Saturday: Popsicle Stick Catapults

26 10 2009

A group of UT students from the American Society of Mechanical Engineers and Pi Tau Sigma visited the Museum to show kids how to make their own catapults out of popsicle sticks, rubber bands, and a bottle cap!

Photo Courtesy of ASME

Photo Courtesy of ASME

Want to build your own catapult and experiment with tension? Click here to download the instructions in a PDF file.

When you press the arm of the catapult down with your finger and hold it in place, you’re stretching the rubber bands. The stretching creates a force called tension. Then, when you let go, all that tension is released—causing the arm of the catapult to fly forward!

Another example of tension is when you play tug-of-war. When the two teams are pulling on the rope in opposite directions, the stretching causes a lot of tension in the rope. That’s why if one team lets go, the tension released has enough force to make the other team stumble!

How far does a ping pong ball fly if you press the catapult arm all the way down? How far does it fly if you press the arm down only a little bit?





Turn Packaging Into Playthings

19 08 2009

Packing materials come in interesting shapes and structures that are just begging to be redesigned! These castles were made from boxes, paper towel rolls, and packaging from our printer toner cartridges:

 

castle 003

castle 004

Go to Craft Magazine’s blog for more ideas on things you can make out of materials formerly destined for the recycle bin. Just one more reason to get excited when a package comes in the mail!





What’s a Throwie?

22 06 2009

A Throwie is made using an LED, a battery, a magnet, scissors, and tape.

throwiesupplies

Elena will explain more about Throwies and show you how to make one!

This movie requires Adobe Flash for playback.

Take a look at the Museum calendar to see when we will be making Throwies and other crafty projects.

http://austinkids.org/getdoc/1de9afb6-7684-40e2-87cb-d0d765d36562/Calendar.aspx





Creme Egg Rube Goldberg

8 03 2009

Around this time of year Cadbury Creme Eggs start showing up in stores. You could eat one…OR you could design a way-too-elaborate contraption to smash it to pieces!





Crayon Pixel Art

6 03 2009

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Christian Faur has also created a "crayon alphabet", in which each letter of the alphabet is represented by a different color

This may look like a regular photo at first glance, but when you look really close you can see that this picture is actually made up of crayons!

Pictures are made up of pixels, or picture elements. Each pixel is a tiny single-colored square; they come together like a checkerboard to form a photograph.

Christian Faur has found a way to create artworks by using a computer grid and a variety of crayons. That’s alot of crayons! Luckily, instead of buying all of them, he makes them!

 hamlet

We decided we were going to join in the fun and create our own pixel art. We used crayons we had lying around. You can use a variety of different materials, such as markers, buttons, coins, or blocks. Try this at home and see what pictures you can make!

This is our pixel art. Can you tell what it is?

This is our pixel art. Can you tell what it is?





Let’s Go Fly a Kite!

24 02 2009

 Do you ever dream of flying high up in the sky? Or floating like a kite in a cool breeze? We do! This Sunday, March 1st, ACM will be out and about enjoying the weather and kite festivities at the 81st annual Zilker Park Kite Festival. We will have fun experiments for you and your family, so come find us and join in the fun!

kite collage

The Exchange Club of Austin presents the 81st Zilker Park Kite Festival

Want an awesome, unique kite?

Make your own! Be creative and design your own kite out of recycled materials. Your kite will surely be “one-of-a-kind!”

We found this awesome website where you can make your own kite. The instructions are simple and easy and tons of fun!





Construct a Gumdrop Structure!

20 02 2009

Here’s a fun project we did at Day Camp that you can try at home!

 headergumdrop

Objective: Use sweet materials to build a structure with strength!

 Materials Needed: gumdrops, toothpicks

 

 gumdrop

What’s the big deal about triangles?

 

As you’ve probably already discovered, squares collapse easily under compression. Four toothpicks joined in a square tend to collapse by giving way at their joints, their weakest points.

 gumdrop structure

But if you make a toothpick triangle, the situation changes. The only way to change the angles of the triangle is by shortening one of the sides. So to make the triangle collapse you would have to push hard enough to break one of the toothpicks.

 

If you want to, you can use your gumdrops and toothpicks to build some strong structures that are made by combining triangles and squares. Looking for other triangles in structures around you may give you ideas for other designs you can build with gumdrops and toothpicks.

 

What other shapes can you make that will withstand applied force?

photoforgumdrop





Exploring our Universe

17 02 2009

 

In honor of Black History Month, we are honoring our successful African Americans in science and technology.

 

 

Scientist Header

Planets 

  Have you looked up into the stars at night and wondered “what exactly is out there?” Or, “where did all the planets come from and how did all the stars get into the sky?”

 

 

Astrophysicist Neil deGrasse Tyson is answering these questions. As director of New York’s Haden Planetarium, he studies the planets, moon, galaxies and stars. He is fascinated with the creation of the universe and knew he wanted to be a scientist since he was 9 years old! He hosts a show on PBS called NOVA Science Now, and holds 9 honorary doctorate degrees. Explore outer space with scientists by making your own constellation viewer!

 

 

logo-constellation-small

Neil deGrasse Tyson

Neil is the same age as NASA! (50)

 

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A constellation is a group of stars that appear to .A constellation is a group of stars that appear to make a picture in the sky. In this activity you can make a viewing tube that allows you to simulate looking at a constellation.

 tube-compilation

Materials:

  • Toilet paper/paper towel tube
  • Blue paper circle
  • Rubber band
  • (optional) constellations printout
  • Scissors
  • Glue
  • Compass point or screw

 

 Instructions:

  1. (If you want to make up their own constellation, skip this part). Choose the constellation you want to view. Cut the circle out.
  2. Use a glue stick to glue the constellation circle onto the center of the blue paper circle
  3. Get an adult to help fix the paper circle to one end of thtube1e tube using a rubber band
  4. Use the stars on the constellation as guides to punch small holes with the compass point or screw. BE CAREFUL! The point is sharp! (You can also just make up their own picture)
  5. Hold your viewer up to the light. Can you see the constellation?

Send us pictures of your constellation viewer!





Science Sunday Celebrates Black History Month

10 02 2009

Last Sunday volunteers from UT and the community came to ACM to present science and engineering activities celebrating Black History Month!

parachute-pride

We designed parachutes in honor of the Tuskegee Airmen!

Volunteers, you are so cool!

Volunteers, you are so cool!

We had great fun building lunar landers, designing parachutes, testing variables, and making constellation viewers! Throughout February we’ll be posting these activities here on the blog. Special thanks to Baker Botts for sponsoring the event and coming out to lend a hand!

 

Testing our designs till we get them right

Testing our designs till we get them right