What should I do with science and technology inventions during the holidays?

In this way, one of my previous inventions in elementary school, which won the first prize, will be used for you to learn from.

Roughly is the improvement of the blackboard groove, the traditional blackboard groove is horizontal (a horizontal iron groove) to divide it into several sections, and then with the horizontal plane at a certain angle (so that the object can slide down the chute), the smoothness and inclination angle of the chute are to be considered, so that the teacher accidentally broke the chalk head and chalk ash on the inclined plane of gravity of the component greater than or equal to the maximum static friction, so that it slides into the small box at the end of the chute.

The design shape is roughly (symbol schematic).

Blackboard |Mouth mouth mouth.

The advantage of this invention is that it can reduce the burden of cleaning the chalk groove on duty, and only need to remove the box and throw it out every day.

Disadvantages: Increasing the length of the blackboard slot also increases the school's funding. Moreover, some teachers who advocate economy want to pick up the slightly longer chalk head and use it again, which brings trouble to the recovery.

Other specific parameters and designs are not disclosed here.

Original ideas, I hope to inspire you, maybe you can draw inferences, such as adding defrosters to classroom windows, designing ventilation equipment for classrooms, etc.

As long as you pay attention to observation and are lazy to go out of the realm (if you encounter difficulties and think "it would be nice if you do it", then if you have a goal, you will create), there will be good inventions. This may be as simple as the teacher assigning homework.

Finally, I wish you a happy Chinese New Year and progress in your studies.

Scouring pads are cut into small pieces and adhesive is attached to the fingers of the gloves to make "scrubber gloves." When cleaning, just pour the detergent directly onto the finger of the glove and you can use it to wash the utensils. And the most convenient thing is that when you clean some of the slits, you can just put your finger in it and you can wash it clean.

Intelligent writing bot.

If you think about it, this depends on your usual knowledge accumulation.

1. The battery must be selected to be attracted by the magnet.

2. The magnet has the same wax amount as the battery diameter and has a conductive metal coating.

3. Absorb on the negative electrode of the battery and ensure that it will not be short-circuited.

<>5. It should be noted that the two edges below the copper line should not touch the magnet at the same time, and there should be a gap.

6. Adjust the upper and lower heights so that the current can pass through the copper wire on one side at a certain time to generate a loop.

7. Place the copper wire on the battery.

8. The small motor has begun to spin, so if you are interested, try it yourself.

Second, the production steps:

1. Place the two chopsticks in a cross shape, then tie them tightly with wire, and then make a sail from the colored paper and paste them.

2. Cut the cardboard into squares, paste it with tape and paper to beautify, and then poke a hole in the middle.

3. Take out two mineral water bottles and paste them on the bottom of the cardboard with wide tape, so that there is buoyancy.

4. Finally, install the sail in the middle.

5. The cute and fun little sailboat is made, and you can sail in the water.

Such an innovative little technology is made.

Features of small production of technology:

1) Simple structure. Generally, you only need to make a few parts and assemble them.

2) The material is easy to find. Many materials can be found at home, such as empty cardboard boxes, toothpaste skins, styrofoam, cans, waste ballpoint pen refills, broken toys, iron wire, iron rubber tablets, etc.

3) Easy processing. Most of the projects have low technical requirements and can be mastered by primary school students.

4) Spend less. Some programs can even cost nothing and do not add to the burden on the family.

Innovative gadget production method 1, homemade badminton.

Prepare materials: 1 empty drink bottle, 2 foam fruit net covers, 1 rubber band, 1 glass marble.

Production process:1Take a 250ml empty beverage bottle and cut off the top half of the bottle;

2.Divide the cut part into 8 equal parts, cut it to the neck of the neck with scissors, and then cut each part into the shape of petals of the same size;

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

4.Wrap another foamed fruit net around a glass marble, stuff it into the mouth of the bottle, plug it tightly and expose about 1 cm;

5.Cut off half of the ping pong ball, cover the bottom of the hemisphere on the mouth of the bottle, cut the four sides into a whisker, cover the mouth of the bottle and fix it with a rubber band.

6.After beautification and retouching, a homemade shuttlecock was completed. Hit a dozen with a badminton racket and see how it goes?

2. Homemade soap paper.

Materials and tools for crafting:

Hygroscopic white paper, small pieces of soap, a brush and disposable beverage cans.

Production method: first chop the soap and put it in the jar, put the cup on the stove after filling the appropriate amount of water, wait for the soap to melt, cut the white paper into the size of a matchbox, apply the soap liquid one by one, and then take it out to dry it to become soap paper.

It can inspire students' thinking and imitation ability: the main materials of the driving principle of the hovercraft: packaging foam box (or other small wooden box), electric toy small motor (small motor on the shaver), battery, etc.

The production points are very interesting.

Electrically driven wind-powered boat] model making: a fan blade is installed on the shaft of the toy motor.

Precautions: Take the electric fan as the driving force, the motor and battery should pay attention to waterproofing, keep dry, modify into an electric fan, and then fix this electric fan in the box, use two 5 or 7 batteries as the power supply, connect it with the electric fan with a wire, and use the weight of the battery as the counterweight, adjust the balance of the box in the water, make two tail fins at the tail of the packaging box as the rudder, to control the sailing direction of the boat (or go straight, or turn in a circle), turn on the power supply to watch, so that the model travels on the water, To adjust the angle of the tail, control the direction of sailing, add a hair dryer to the electric fan, and also increase the speed of sailing

Tools required: paper cups, scissors, utility knives, markers.

The first step is to draw the pattern to be cut on the paper cup with a marker, as shown in the figure below

Step 2: Then use a utility knife to remove the bottom of the paper cup, as shown in the figure below

The third step is to crop along the drawn diagram, as shown in the figure below

The fourth step and the last convenient and practical mobile phone holder are completed, as shown in the figure below