Materials

• Two pieces of paper
• Scissors
• Pencil
• Drinking straw
• Ruler
• Clear space in which to launch your ”rockets,” such as a large room, hallway or outdoor area with no wind
• Measuring tape (optional)

Procedure

1. Cut one piece of paper into four smaller rectangles, by cutting it in half lengthwise and widthwise. This will allow you to make four rockets.
2. Wrap one of the paper rectangles around a pencil to form a cylinder, with the long edge of the paper along the length of the pencil.
3. Tape the cylinder closed so it does not unravel (but do not tape it to the pencil).
4. Slide the cylinder off the pencil. Pinch one end of the cylinder shut and seal it with tape. (This is the ”front” end of your rocket.) Leave the other end open. This will be your first rocket, with no fins.
5. With plenty of room in front of you—and no obstructions, such as furniture or people—prepare to launch your first rocket! Slide it over a drinking straw. Aim the straw forward, then blow into it as hard as you can. Watch your rocket as it flies.
   How far does it go? Does it fly straight or does it tumble in midair?
6. Launch your rocket a few more times to see if it flies the same way. If you would like to record your rocket flight distances, be sure to launch it from the same place each time, and measure to the landing spot with a tape measure.
7. Make another paper rocket following the previous steps. Remember to pinch one end and tape it shut.
8. For this rocket, however, you will make fins. Cut out two right triangles (with a 90-degree angle in one corner) from the other piece of paper. The long sides of the triangles should be about eight centimeters. You will fold each triangle to make two fins, so you will have four fins total.
   
9. Draw a line that splits one triangle in half (from the 90-degree corner to the middle of the long side of the triangle).
10. Draw two lines parallel to the first line (one on each side), about five millimeters away from it.
11. Now, fold the triangle up along these two lines. The result should be two triangles sticking up in the air (the fins), with a flat part connecting them in between.
12. Tape the flat part to the side of your cylinder, toward the open end (the base, or bottom, of your rocket).
13. Repeat these steps for the other triangle, and tape it to your cylinder on the opposite side of the first one. The result should be four fins that form a ”+” shape when you look at the rocket from either end. If necessary, bend the fins so they are spaced out 90 degrees apart from one another.
14. Slide the new rocket onto the drinking straw and launch it.
    How far does this rocket go? How does its flight compare with your first finless rocket? Does it go farther? Does it tumble or does it fly straight? Do you think fins help the stability of your rocket?
15. Launch it a few more times. If you are measuring the flight distance of each rocket, use a tape measure and record how far it flew.

What Happened?

You should have seen that your finless rocket flew straight at first but quickly spiraled out of control. It might have tumbled through the air and fluttered to the ground, almost like a leaf falling from a tree. This is because the rocket did not have fins to keep it stable. If it started turning just a little bit, then it would start turning even more rapidly until it completely lost control. In contrast, your second rocket that had fins should have flown straight, and traveled much farther as a result. This is because the fins help keep the rocket stable, or pointed in the same direction. If the rocket turns a little bit, the fins help turn it back in the original direction.

Design a mythical animal through collage and illustration! This activity builds creativity as children combine items in new ways.

Materials Required

• Blank paper
• Pens, pencils, markers, or crayons (something to write and draw with)
• Color copies of animal photos from books, magazines or the Internet

Instructions

Children can approach the Animal Remix activity in two ways:

• building a collage or
• using their imagination.

For the collage method:

• Using pictures of animals from magazines, paste together the front of one animal with the back of a different animal to invent a new, imaginary animal.
• Describe the creature’s special features and why they are cool or important to its survival.
• Create a name for the animal.

For the imagination method:

• Compile a list of animals.
• Write down the most exciting aspects of the animal on a piece of paper. Below are sample animal characteristics and habitats

• Decide where their animal will live, what it will eat, and how it will move. These decisions can help inform the features of the creature. For example, if an animal lives in the Arctic it might need very thick fur to keep warm. (The imaginary creature does not need to be realistic.)
• Draw a picture of the imaginary animal with some of the interesting characteristics in its habitat.
• Describe the creature’s special features and why they are cool or important to its survival.
• Create a name for the animal.

Additional Tips

Try these add-on activities:

• Invent a myth or a fable that tells the story of your animal.
• Imagine what your creature’s life is like. What adventures might it have while in its natural habitat? Who or what does it eat? Who eats your animal? Where does it sleep? How does it play? Does it live alone or in a group?
• Turn the imaginary animal into a three-dimensional sculpture with blocks, papiermâché, glue and fabric.

Copyright © 2020 Bay Area Discovery Museum Inc. All rights reserved.

Make a code table where each letter has a code (let the children help you figure it out). Make simple things that can be drawn. Make sure they are clearly distinguishable.

Can look like (not the whole alphabet in my example):

Step 2. Translate the message. So A becomes , D becomes etc.

Step 3.         Write the message on the card and send it with a decoding table so that the message can be deciphered.

The card may look like:

For the experiment you need:

• bicarbonate of soda
• food vinegar
• a teaspoon
• for measuring liquids: a syringe or decilitre measure
• a transparent jar or drinking glass
• an empty balloon
• an empty bottle (0.5 l)
• a funnel (you can also make a funnel out of baking paper, for example)

Instructions

• First, observe the reaction of the bicarbonate mixed with the vinegar.
  Put two teaspoons of bicarbonate in the jar. Then measure out 10 ml of vinegar into the syringe. Squirt the vinegar over the bicarbonate and observe: what do you see? What do you hear? How would you describe your observations?
• For the following, measure out 30 ml of vinegar into the bottle. Then put five teaspoons of bicarbonate into the balloon. Then thread the opening of the balloon over the opening of the bottle. Hold the balloon up so that the bicarbonate flows into the bottle. What observations can you make?
• Think together about why the balloon is growing. How could the balloon be made even bigger?
• Photograph and film the different stages of the experiment with the child. Think about which parts of the experiment are important to present. How should they be presented so that the reader gets as clear a picture as possible of what has been done?

To support the adult:

• Encourage the child to describe their observations at each stage. Observations can be documented, for example, by drawing, recording comments, photographing and filming.

The balloon grows because the bicarbonate and the vinegar create a reaction that forms gas. The gas formed is carbon dioxide.