Children s science and technology small production, children s science and technology handmade proce

Small production of science and technology: starry sky lantern.

Materials required: Scrap iron cans (cans, milk powder cans, paint buckets, etc.), nails, hammers, computers with printers.

2. Wrap the printed drawings around the side of the scrap iron can and glue them.

3. Use iron nails to pierce holes in the places marked with black spots on the drawings, and poke small holes with regular patterns on the surface of the scrap iron cans.

4. After the hole is laid, tear off the drawings on the tin can. At night, if you light a candle inside, it will be a special starry sky lamp.

In addition, waste cartons can also be made into starry sky lights, and the same is done.

Check it out on Geek Fan Network, it's full of small productions.

The process of making a kid's tech handmade is as follows:1. Clean the ice cream stick and dry it.

2. At the front end of the wooden clip, the left and right points of the wire are hot-melt glued.

3. Press the ice cream stick to the hot melt adhesive to fix it as the front wing of the aircraft model.

4. What it looks like after it is glued.

5. The reverse side of the clip is also dotted with hot melt adhesive.

6. Fix the other ice cream stick and align it with the wing on the other side.

7. Point hot melt glue at the end of the wooden clip, and paste a slightly shorter ice cream stick on it.

8. Cut off the round ends on both sides of the ice cream stick.

9. On the cutting part of the round end of the ice cream stick, point the hot melt glue and paste it on the tail fin.

10. Fix it with your hands for a while to ensure that the round head is firmly in place.

11. A miniature airplane toy model has been made.

12. Put newspaper on the table pad and carefully paint the whole body of the aircraft model in red.

13. Then use black paint to color the tail and upper front wing of the aircraft, and it is done.

That's it for kids tech crafting process.

Copy the pattern. Materials: a bottle of detergent, a glass of water, a bottle of turpentine, a small plate, a piece of white paper, a small spoon, a sponge, a ruler, a pattern.

Take two spoonfuls of water, one spoonful of turpentine, and one spoonful of wash.

Place the liquid in a small dish and stir well to form a mixed solution.

with a sponge. With the mixture, apply gently and evenly to the pattern.

Take a piece of white paper and cover it over the pattern and use a ruler to vigorously scratch the white paper.

After a while, the white paper was removed, and the ** was copied on it.

For small scientific and technological productions, there are many production methods. The main thing is to look at the content of small scientific and technological productions.

There is a project that you see how :

Now vending machines are popular, which has brought great convenience to people's lives. However, with the increase of living materials, the cost of waste has also increased significantly, resulting in pollution. Is it possible to design a machine that can automatically collect some special discard?

I envisage placing such a machine in some public place, and when people put waste into the designated entrance according to the sorting requirements, the machine will be able to do it automatically. Paying according to the general market purchase price (e.g. 1 yuan per bottle) will make people more conscious of caring for the environment.

You can refer to this idea, make a model, and demonstrate, to illustrate that some of the automation structures inside it can be solved with the help of parents or teachers and electricians.

Homemade compass.

The compass is one of the four great inventions of ancient China. It has a great use in everyday life, and it is made according to the principle of magnetism. Take a piece of plywood and saw a base plate with a diameter of 120 mm.

Sandpaper the surface and edges. Mark the symbol on a piece of sketch paper, cut off the plate surface according to the size, paste it under the chassis, take a pin or sewing needle, pass it through the center of the back of the chassis, and expose the pointed end to the surface of the plate as a shaft. Cut a piece of white iron sheet into the shape of a pointer according to the size, drill a hole with a diameter of 2 mm, and attach a button to the pointer.

Touch the pointer several times with a permanent magnet to magnetize the pointer. Finally, place the pointer on the shaft. Notice which end points north, and the one that is painted red can only weigh very light objects, such as two small scraps of paper.

The materials needed for the production are: a wooden board (preferably a little thinner, not too large), a washer, a paper clip, an awl, an electric soldering iron, several wires, two light-emitting diodes, a battery. These materials are easy to find, and if you don't have LEDs, you can go to the electronics market and buy them, which are very cheap.

The production process is as follows: turn a small hole with an awl in the middle of the board, bend a paper clip into a hook shape, and fix it perpendicular to the board through the small hole, and hook it to hang the washer. Then take two paper clips and straighten them in half, leaving only one turn, which is actually the arm of the balance and the rest of the curved part is the tray.

Another paper clip does the same. Then the two paper clips and washers are welded together, the washers are in the middle, and the paper clips are in a straight line. Then hang the washer on the hook and adjust the distance between the hook and the board, about 3mm.

Then fix two paper clips under two trays, and next to the paper clips are ready to use LEDs as indicator lights. With a circuit underneath the wooden board, the balance is equivalent to a SPDT switch. This circuit is equivalent to two circuits, sharing one power supply and two light-emitting diodes.

As long as the left side sinks, the left tray will communicate with the pin under him, so that the circuit is turned on and the diode emits light; If the weight of both sides is equal, the circuit is not open, and both diodes are not lit.