How to make a small invention for elementary school students should be simple, I have to pay 5

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? It's easy

A small fan, just a small motor, two size 5 batteries, some short wires, a solid plastic foam, a pair of scissors, some pieces of cardboard!

First of all, hollow out the solid foam, connect the small motor with a wire, stuff it into the foam (to keep the rotor shaft of the small motor leaking foam), connect the wire to the battery, also stuff it into the foam, cut the small piece of paper into rows with scissors, and put it on the rotor shaft of the small motor!

The method of making small inventions for elementary school students is as follows:Take a 250ml empty beverage bottle and cut off the top half of the bottle; 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; Put the foam fruit net sleeve outside the bottle body, and fix it at the mouth of the bottle with a rubber band; Wrap another foam fruit net around a glass marble.

Plug into the mouth of the bottle, tighten and expose about 1 cm; 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. After beautification and retouching, a homemade shuttlecock was completed.

Make a wind tester: insert a chopstick (preferably a metal rod) into the middle hole of the stressed panel (square cardboard), insert a spring into the chopsticks and fix it with the cardboard, and make a base frame to fix it yourself.

1.Screen: art plus handicraft: scissors, colored pencils, bamboo (bamboo strips are sufficient), scotch tape, utility knife, pencil, etc.

A: Cut the bamboo into two bamboo strips with the thickness of toothpicks, and then cut it off without 8cm, a total of 5, of course, if you want the screen to be large, you can increase the length and quantity of the bamboo strips.

B: Look for colorful cardboard such as wall calendars with landscape paintings, and of course you can also draw your own. A total of four rectangular strips of paper (drawing strips) cut into 7 cm long and 3 cm wide strips are required.

C: Splice four strips of painting with five bamboo strips, add a strip between the two bamboo strips, and use scotch tape to complete.

D: Fold the semi-finished product along the junction of the bamboo strip and the painting strip to make the screen like a folding fan, and then let him hold it for a few minutes, and then pull it open, then a three-dimensional screen is ready, and you can also write some famous sayings on it! Very nice crafts!

2.Simple wind turbines.

Physics plus art plus production: a can, a pair of scissors, a tinplate, a wooden strip, a four-wheel drive motor, a bottle of super glue, some colored LED bulbs (or bulbs, diodes).

A: Use scissors to cut off the upper part of the can by about 1cm, keep the remaining can, that is, make a "cup" first, and then draw three at equal intervals on the cup, then keep these three, cut off the remaining excess, and then present a round base with three blades, like a propeller, and then use the tip of scissors to drill a round hole slightly smaller than the central axis of the motor in the middle of the base.

B: Tinplate (i.e., ordinary pieces of iron) wraps the motor firmly and then nails it to the wooden strips.

C: Fix the blade on the central axis of the motor with super glue to ensure the vertical, horizontal and windward nature of the blade.

D: Connect the two wires of the motor to the LED bulb to ensure that the wire interface is connected normally (positive and negative, good contact).

Small inventions for primary school students: simple and practical, low-cost production.

Elementary school students have a simple small hair to restore their sight, and a small production has a globe.

Bai starts by taking a ping pong ball.

du, draw the necessary zhi longitude and latitude, such as the equatorial north and south latitudes, the pole, the prime meridian and the 180 meridians, and so on.

After drawing the globe ball, we still have to make a hole in the poles, there is no hole on the earth, but our globe is fixed on the bracket, and we still need to use it.

Upstairs is awesome but costly: small bottle + vinegar + baking soda + bottle cap + shake hard + pull the cap = spray you with vinegar (CO2).

Coke (2 liters) + Mentos Candy (20 capsules) + cork = mortar.

Decorate the outside of the glass bottle, and finally put the lamp with its own battery into the bottle, and a patterned lamp is ready.

The teacher asked me to make a simple electric invention, what competition to participate in. Be sure to be detailed.

1. There is an "automatic water change system" here

Take two larger beverage bottles, one of which (hereinafter referred to as 1) is to drill two holes in the same direction, and insert two tubes in each, each of which is not connected. Connect the tube at the top point to the other bottle (hereafter referred to as 2). 2 filled with water.

Squeezing, the water flows to 1, squeezing 1, and the water flows out from the pipe below, which is the automatic water change system.

2. Kong Ming lantern:

Take a large plastic bag, take something that can be burned, and tie it under the plastic bag with a wire. During the test flight, ignite the incendiary, let go, and the Kong Ming lantern flies.