Seek a small production of science and technology (the simpler the better)

1, homemade badminton

Preparation materials: an empty beverage bottle, two foam fruit net sets, a rubber band, a glass bullet.

The production process:

1. Take 250 ml empty beverage bottle a bottle of the upper part of the cut off;

2. Will be cut into the part are divided into eight parts, cut with scissors to the neck of the bottle, and then, will be cut into each part of the size of the same shape of the flower petals;

3. Will be the foam fruit mesh set in the bottle outside, with rubber bands fixed in the bottle mouth;

4. Wrap another foam fruit net cover around a glass bullet, stuff it into the mouth of the bottle, stuff it tightly and expose it for about 1 cm;

5. Cut half a ping pong ball, cover the bottom of the hemisphere over the mouth of the bottle, cut all four edges into whiskers, cover the mouth of the bottle and then fix it with a rubber band.

6. Beautify the finishing touches, a homemade badminton completed. Use a badminton racket to play, see how the effect?

2, homemade soap paper

Production materials and tools:

Moisture-absorbent white paper, a small piece of soap, a brush and a disposable beverage can.

Production method:

First, the soap chopped in the can, the amount of water on the cup on the stove heating, and so the soap melted, the white paper cut into matchbox size, a sheet coated with soap, and then removed from the drying of the soap paper.

3, homemade hot air balloon

1. First of all, we cut out 6 to 8 leaf-shaped pieces of soft paper.

2. Fold them in half and glue their edges together to make a balloon.

3. Tape four strings to the bottom of the balloon. Use playdough to fix the other end of the threads to the table.

4. Turn the hairdryer on as slow as possible. Point the mouth of the hairdryer upwards at the opening at the bottom and turn on the switch. The balloon will slowly grow in size and pull the cord tight and off the table.

4, homemade flashlight

Specific production methods are: a waste cans (such as Lulu beverage cans) up off one end of the lid, the other end of the round hammer knocked concave. With a thick corrugated cardboard rolled up two one battery, battery positive pole up, negative pole down into the can. Find a suitable plastic lid (e.g., a magical large rolled box lid will snap right onto the Lulu beverage can), and dig a small round hole in the center of the lid, the size of which is appropriate to allow the light bulb to be inserted tightly. Insert the bulb base into the hole. Take a piece of wire and strip the ends of the wire, wrap one end around the base of the bulb, and pierce the other end through a small hole in the side of the plastic lid. Place the plastic cover over the can. Check to see that the bulb and battery are not in close contact. Here the disposable flashlight is ready. When using, use your thumb to put from the side wall through the wire pressed from the can without paint on the weld, the flashlight will glow, thumb away from the wire jumped up, the flashlight is extinguished, the use of very convenient.

5, homemade solar cooker

Find a large flashlight on the concave reflective bowl, with rigid foam or wood to cut a cylinder about 4 centimeters long, the diameter of the reflective bowl can be tightly plugged into the round holes appropriate. At one end of the cylinder transversely drilled a fine hole, threaded into a diameter equal to the hole diameter of the wire, and then exposed in the cylinder outside the wire ends wrench folded into 90 °, each left 5 cm can be. Plug the cylinder into the round hole of the reflective bowl, and then insert the ends of the wire into a piece of Styrofoam or wooden base plate. Sharpen both ends of a thin bamboo skewer and insert one end into the cylinder in the center of the reflecting bowl and the other end into a small piece of potato. Place the device in the sun so that the reflective bowl is facing the direction of the sun, and then, patiently adjust the length of the bamboo skewer so that the inserted potato sits right on the glowing focal point. It won't take long for the potato to be cooked by the sun's rays and give off flavor.

6, compass

Compass, is one of the four great inventions of ancient China. It has great use in daily life, and it is made according to the principle of magnetism.

Take a piece of plywood, saw a diameter of 120 millimeters of the base plate. Smooth the surface and edges with sandpaper. On a piece of lead drawing paper marked with symbols, according to the size of the plate cut off, pasted under the chassis, take a big head pin or sewing needle, from the center of the back of the chassis through, the tip will be exposed to the surface of the plate to do the axis. According to the size of a piece of white iron cut into the shape of a pointer, and drill a hole of 2 mm in diameter, a button fixed on the pointer. Touch the pointer with a piece of permanent magnet several times to magnetize the pointer. Finally, place the pointer on the shaft. Note which end points north, and paint that end red.

1. The characteristics of science and technology small production The characteristics of science and technology small production lies in a "small" word. "Small" where? (1) simple structure. Generally as long as the production of a few parts, and then assembled on a good job. (2) Materials are easy to find. Many materials can be found at home, such as empty cardboard boxes, toothpaste skins, Styrofoam, canisters, waste ballpoint pen refills, broken toys, wire, iron and so on. (3) Easy processing. Most of the projects have low technical requirements for the process, which can be mastered by elementary school students. (4) Spend less money. Some projects can even not spend money, will not increase the burden on the family. (5) See results quickly. Many projects as long as a day, half a day can be made, which is in line with the psychology of children and teenagers, easy to promote popularization. 2. Forms of activities (1) the establishment of science and technology classes, so that students generally receive science education, and counseling students to produce. (2) Establishing interest groups to counsel students on production. (3) Encourage students to choose their own topics and complete small productions independently, and give appropriate counseling when necessary. 3. Activity content and counseling methods (1) According to the drawings, instructions, or printed materials for production. (2) To cultivate creative ability, intellectual development of science and technology as the center of small production. Mainly to make children's favorite toys, there are the following forms: ① Teachers to introduce a small production methods and scientific reasoning, and demonstrated in kind, arousing the interest of students, students according to the rationale for their own creative production. Such as "chickens eat rice", is the use of the principle of leverage to make pull toys, pulling the two chickens head movement in the same direction or the opposite direction, is due to the leverage point, the location of the pivot point is different. Students in the understanding of the reasoning, each design, make a lot of novel lever pulling toys, such as I rocket to space, kitten fishing, ping-pong, over the canyon and so on. ② small production of science and technology from waste to treasure. Teachers use objects to explain how to use the gears of used clocks and used toys to design and make new toys. Some students were inspired to complete their own activity toys with novel ideas and high quality, such as hand-operated electric dry boats, electric bumper cars, robots, funny men dancing, owls and mice, and so on. (iii) Thematic science and technology production competitions. According to different grades to put forward different thematic requirements, the students in each class everyone design and production, the class selected a representative team, and then the grade competition. Such as a fourth, fifth and sixth grade wind car competition. We stipulate that the wheels of the racing car must be homemade with thick paper, can not use ready-made wheels or other substitutes, other size, weight, style is not limited. Once again, we had rubber band powered car races, limiting it to only rubber bands that had to be of uniform size and length, and nothing else. So that students are highly motivated, design and production of a variety of racing cars, giving full play to their ingenuity and develop their creative ability. 4. Notes (1) according to age, knowledge level, hands-on ability, interests and hobbies separate grades, choose different production content. The lower grades should choose the contents that are easy to make successfully, such as small parachutes; the middle and upper grades should be improved in terms of difficulty. (2) Promote innovation. (3) Do not do it all by yourself. (4) Emphasize safety in making

Reference:

1. The characteristics of science and technology small production The characteristics of science and technology small production lies in a "small" word. Where is "small"? (1) simple structure. Generally as long as the production of a few parts, and then assembled on a good job. (2) Materials are easy to find. Many materials can be found at home, such as empty cardboard boxes, toothpaste skins, Styrofoam, canisters, waste ballpoint pen refills, broken toys, wire, iron and so on. (3) Easy processing. Most of the projects have low technical requirements for the process, which can be mastered by elementary school students. (4) Spend less money. Some projects can even not spend money, will not increase the burden on the family. (5) See results quickly. Many projects as long as a day, half a day can be made, which is in line with the psychology of children and teenagers, easy to promote popularization. 2. Forms of activities (1) the establishment of science and technology classes, so that students generally receive science education, and counseling students to make. (2) Establishing interest groups to counsel students on production. (3) Encourage students to choose their own topics and complete small productions independently, and give appropriate counseling when necessary. 3. Activity content and counseling methods (1) According to the drawings, instructions, or printed materials for production. (2) To cultivate creative ability, intellectual development of science and technology as the center of small production. Mainly to make children's favorite toys, there are the following forms: ① Teachers to introduce a small production methods and scientific reasoning, and demonstrated in kind, arousing the interest of students, students according to the rationale for their own creative production. Such as "chickens eat rice", is the use of the principle of leverage to make pull toys, pulling the two chickens head movement in the same direction or the opposite direction, is due to the leverage point, the location of the pivot point is different. Students in the understanding of the reasoning, each design, make a lot of novel lever pulling toys, such as I rocket to space, kitten fishing, ping-pong, over the canyon and so on. ② small production of science and technology from waste to treasure. Teachers use objects to explain how to use the gears of used clocks and used toys to design and make new toys. Some students were inspired to complete their own activity toys with novel ideas and high quality, such as hand-operated electric dry boats, electric bumper cars, robots, funny men dancing, owls and mice, and so on. (iii) Thematic science and technology production competitions. According to different grades to put forward different thematic requirements, the students in each class everyone design and production, the class selected a representative team, and then the grade competition. Such as a fourth, fifth and sixth grade wind car competition. We stipulate that the wheels of the racing car must be homemade with thick paper, can not use ready-made wheels or other substitutes, other size, weight, style is not limited. Once again, we had rubber band powered car races, limiting it to only rubber bands that had to be of uniform size and length, and nothing else. So that students are highly motivated, design and production of a variety of racing cars, giving full play to their ingenuity and develop their creative ability. 4. Notes (1) according to age, knowledge level, hands-on ability, interests and hobbies separate grades, choose different production content. The lower grades should choose the contents that are easy to make successfully, such as small parachutes; the middle and upper grades should be improved in terms of difficulty. (2) Promote innovation. (3) Do not do it all by yourself. (4) Emphasize the need to pay attention to safety in making

When in use, do not let the pointer touch a magnet with strong magnetism, so as not to affect the magnetic pole of the compass