The making process of primary school students' scientific and technological inventions

Penguin baby preparation materials: goose eggs, plasticine, cardboard, glue, black marker, scissors. Production process: 1. Make a small hole in the small end of the goose egg and pour out the egg white and yolk (don't throw them away, a small production plan can be made into a kaleidoscope.

Making a kaleidoscope Everyone has seen a kaleidoscope. But how many people know how they are made or how they change magically? Kaleidoscope was created by physicist David? It was invented by Sir Brewster in 18 16. at present ......

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"Small technology products" Simple compass for small technology products

Simple compass Take a sewing needle, magnetize it with a magnet, then tie it in the middle of the needle with cotton thread and hang it on the bracket to become a compass. Make another floating compass: take a magnetized steel needle and pass it through a small cork. ......

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"Small craft" small craft to make a simple thermometer

Make a simple thermometer in a small glass bottle, fill it with half a bottle of colored water, and match it with a suitable cork. A thin glass tube with one end sealed is inserted into a cork. First heat the sealed end of the thin glass tube (stay away from the fire source when heating to prevent it from breaking), and then ......

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Small-scale production of science and technology boiling water alarm

To be a "boiling water alarm", take an old fluorescent lamp upconverter and remove the shell, and the U-shaped moving contact and a single static contact inside will be exposed. Heat the U-shaped moving contact on the fire. After a while, the U-shaped movable contact will open outward, and ......

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"Small craft production" small craft production flash Christmas tree

The circuit of the small flashing Christmas tree is shown in figure 1. New flash light-emitting diodes VD3, VD6, VD9, VD 12 and other common light-emitting diodes form four flash generating circuits. When the power switch SA is closed, the battery G flashes. ......

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Several experimental methods of "small production by science and technology"

Method 1 of making a tumbler [Materials] Table tennis, rubber balls, white latex, rags or scraps of paper, plasticine [Making process] (1) Make a hole with a diameter of 3cm at the top of the rubber ball, and put it into the bottom of the ball from the hole, which is equivalent to one third of the ball. ......

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Small Production of Science and Technology Teaching Plan Woodworking Small Production: Wooden Sticker

Woodworking small production: wooden stick painting 1. Teaching objective: 1. Through the appreciation of the works, we can understand some characteristics of making small animals with wooden sticks, generate our own needs and form our own basic design ideas. 2, through the design of small animal woodworking works, we know that it has been designed. ......

Innovative invention and production method 1, homemade badminton

Preparation materials: an empty beverage bottle, two foam fruit nets, a rubber band and a glass ball.

Production process:

1. Take an empty 250ml beverage bottle and cut off the upper part of the bottle body;

2. Divide the cut part into 8 parts, cut it to the bottleneck with scissors, and then cut each part into a petal shape with the same size;

3. Cover the foam fruit net outside the bottle and fix it at the mouth of the bottle with a rubber band;

4. Wrap a glass marble with another foam fruit net and plug it into the bottle mouth until it is exposed about1cm;

5. Cut off half a table tennis ball, cover the bottom of the hemisphere on the bottle mouth, cut the four sides into whiskers, cover the bottle mouth and fix it with rubber bands.

6. After beautification, a homemade badminton is finished. Hit a dozen with a badminton racket and see how it works.

2, homemade soap paper

Production materials and tools:

White paper with good water absorption, small pieces of soap, writing brush and disposable beverage cans.

Production method:

Chop up the soap first, put it in a jar, put a proper amount of water in it, heat the cup on the stove, and when the soap melts, cut the white paper into the size of a matchbox, coat it with soap one by one, then take it out and dry it in the shade, and you can make soap paper.

3. homemade hot air balloon

1. First, we cut 6-8 leaflike pieces of paper from soft paper.

2. Fold them in half and stick the edges together to make a balloon.

3. Stick the four connecting wires to the bottom of the balloon with adhesive tape. Fix the other end of the line on the table with plasticine.

Try to set the speed of the hair dryer very slowly. Aim the air outlet upward at the opening at the bottom, and then turn on the switch. The balloon will gradually get bigger, tighten the line and leave the table.

4, homemade flashlight

The specific manufacturing method is: lift one end of an abandoned can (such as Lulu beverage can) and beat the other end with a round hammer. Roll up two 1 batteries with thick corrugated cardboard and put them in a can, with the positive pole facing up and the negative pole facing down. Find a suitable plastic cover (for example, the magic big roll cover can just be buckled on Lulu's beverage can), and dig a round hole in the center of the cover, the size of which is suitable for the light bulb to be inserted tightly. Insert the bulb base into the small hole. Take a section of tracing wire, peel off the wire skin at both ends, wrap one end around the lamp cap, and tie a small hole at the other end from the side of the plastic cover. Put the plastic cover on the jar. Check whether the bulb and battery are in close contact. Disposable flashlights will be ready here. When in use, press the wire on the side wall with your thumb on the unpainted weld away from the can, and the flashlight will glow. When your thumb jumps off the wire, the flashlight will go out, which is very convenient to use.

5, homemade solar cookers

Find a concave reflective bowl on a big flashlight, and cut it into a cylinder about 4 cm long with rigid foam plastic or wood, just enough in diameter to fit into the round hole of the reflective bowl. Drill a fine hole horizontally at one end of the cylinder, insert an iron wire with a diameter equivalent to the aperture, and then bend the two ends of the iron wire exposed outside the cylinder at 90 degrees, leaving 5 cm each. Insert the cylinder into the round hole of the reflective bowl, and then insert both ends of the iron wire on the foam plastic or wooden bottom plate. Sharpen both ends of a thin bamboo stick, insert one end into the cylinder in the center of the reflective bowl, and insert a small piece of potato at the other end. Put the device in the sun, let the reflective bowl face the sun, and then, patiently adjust the length of the bamboo stick so that the inserted potatoes are just in the focus of light. Before long, the potatoes will be cooked by the sun and smell delicious.

6, homemade colored candles

Materials: colored crayons, wax

Production method:

1. Find an abandoned canned beverage barrel (for example, 1.25 liter coke bottle), cut off the lid and cut the wax into the barrel.

2. Put the bucket in hot water, stir the wax inside and let it melt completely. It is best to use boiled water. But ask your parents for help, or do this step under their supervision.

3. Pour the molten liquid into a beautiful container (for example, put a heart-shaped chocolate box). Don't pour too much. As for the reason, look down. Of course, you have to put the thread as a candle core in the container first.

4. The initial idea of wax cooling, A, according to the method of surface painting, poured molten colored crayons into it (colored crayons come in handy at this time). In this way, different colors of wax are added layer by layer, and beautiful candles are made.

7. Self-made wall-mounted flower basket

Materials and tools: two sprite bottles, glue, meat cleaver, scissors.

Production method:

1. Remove the green bottom cover of Sprite bottle, cut it into lotus shape, turn it over and stick it on the bottle body to form the base.

2. Cut a 2 cm wide green ring from the green bottom sleeve and put it on the bottle.

3. Remove the bottleneck, and cut a 13cm long, 8cm wide wideband and several 3cm wide narrowband on the bottle.

4. Carve a pattern on a 3 cm narrow strip with a meat cleaver? Figure 3? , then fold these narrow strips outward and insert the green ring from bottom to top.

5. Take another beverage bottle, use the bottle body and cut out 6 leaves with scissors, the length is 17 cm.

6. Nail the flower basket on the wall, insert leaves and flowers, and the wall-hung flower basket will be ready.

8, homemade cockroach catching box

Take a piece of 220× 150(mm) cardboard.

The most important part of the capture box is the capture surface. Take a piece of plastic film, cut it into the same size as the bottom of the box, coat it with adhesive and spread it on the bottom of the box. Whether you can catch cockroaches depends on the adhesive. The adhesive has two functions: one is to introduce the cockroach into the box, and the other is to firmly stick the cockroach to the catching surface. Preparation of attractant: Mix 40% meat powder, 50% flour and 10% bean cake, with a total amount of about 20g, and mix well for later use. The adhesive is prepared by mixing 20g of rosin and10g of vegetable oil, heating to gel, and uniformly mixing attractant and adhesive.

Spread the prepared paste evenly on the grasping surface lined with plastic film, then fold it inward according to the original dotted line, and finally insert the tongue piece B into the notch A..

Because the mixture of rosin and vegetable oil is not dry, the viscosity of bait can be as long as one week. Put the trap box in the place where cockroaches haunt. Because the box is dark and has the bait that cockroaches like, cockroaches will climb into the box to fight for the bait and get stuck on it. When it is full, the carton can be crushed and discarded, and the plastic film can be removed and replaced with plastic film coated with bait, so that the box can be reused.

If the size of the catching box is enlarged and the composition of the adhesive is slightly adjusted, the paper mousetrap can be made by thickening the coating.