Gizmo, small production, is there a simple small production, I want to use it, very urgent

Tech Crafts: Incredible Widgets, Simple and Practical!

Why is it rolling up?

Due to the gravitational pull of the earth, everything falls from top to bottom; Water from the high places flows to the lower places; Stones on the slope, roll down the slope. Can you imagine what happens to an object rolling up a slope?

Let's take a look at this interesting phenomenon. Make two cones out of thick paper or thin cards, and then glue (or paste) to butt them together; Put a large book and a small book at a certain distance apart, and pay attention to the fact that the back of the book should be up to put it more stable. Put two round chopsticks or sticks on top of the book, and let the higher end of the round chopsticks slightly out of the way than the lower one.

Now, you can place the double cone you just made on the stick near the end of the book, which is the lower end. At this time, you will be surprised to find that the double cone seems to have "magical" it and actually rolls uphill along the "track". What seemed impossible actually happened.

Is it really a double cone rolling uphill? Does the gravitational pull of the Earth not work on the double cone? No. You put the double cone on the stick and let it roll again, and you take a closer look at how the double cone rolls. You're sure to discover the mystery.

What does it look like to look at the two ends of the double cone, resting on two wooden skids that are close together? After rolling, the double cone actually goes down due to the increasing distance between the two sticks.

Take a closer look, isn't that the case? Note that when playing this game, the height of the two books cannot be too different.

Inventions for primary school students, 3 simple and practical life inventions.

.A small invention in daily life Set of socks After each laundry, it is often a hassle to pick out pairs of socks to hang up. Although it is possible to fix the pair of socks with a buckle before washing, this method tends to deform the washed socks and makes them uncomfortable to wear, and it is not suitable for women's nylon stockings.

Set of socks. 2.I'm curious about everything, how to make a gizmo, and this can't be considered a real invention, and the so-called gadget is just a simplification of some everyday objects by one's own peculiar ideas.

Night cicada 3Help think of a gizmo for everyday life.

Clean eraser with brush.

If you make a typo and use an eraser.

Paper Roll Strip Tower Making Process:

1) Prepare a number of double-sided tape and newspapers.

2) Roll the newspaper into long, thin strips, the thinner the better, and hold them in place.

3) Glue them together one by one to form a tower.

4) Done!

In fact, there are many small inventions, and before making a small invention, you must first have some ideas, and then prepare the required materials, and then slowly make them. The following is how to make an automatic blender for a child, you can refer to it.

Preparation materials: wooden boards, wooden stalls, small motors, relaxation box (containing two No. 5 dry batteries), power switch, wires, connecting hoses, wire hinge, pulley buttons, eye-catching circles, aluminum sheets, glasses, screws, screwdrivers, and awls.

How to make an automatic mixer for children:

1.First, use wood to make ten brackets according to Figure 1, design the position of the motor, battery box, and button switch, and determine the position of the glass.

2.According to Figure 2, fix the motor and battery box on the upper end of the bracket with screws, and fix the power switch on the back of the bracket.

3.Fix the end of the connecting hose on the motor shaft, fix the small iron ring in the middle of the bracket, pass the rotating shaft through the small iron ring, the upper end is installed in the connecting pipe, and the lower end is installed in the pulley button.

4.Drill a hole in the middle of the long strip of aluminum, bend the aluminium sheet, and fix it to the lower end of the fixing button with screws.

5.Connect the motor, battery case, and power switch with wires (see Figure 3). Place the liquid glass under the stand and serve it on the plate. Give it a try, press the switch to turn the line on, the motor turns immediately, and the rotating shaft makes the aluminum fork turn, constantly stirring the liquid in the cup.

First, cut the heavy waist of the Coca-Cola plastic bottle. Pour a little water into it. Mouth out. Cut a small opening. He took out a pack of five-leaf gods from his pocket. This makes a soot anus.

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.

Homemade shuttlecocks.

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?

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).

Roll paper refills to make pen holders.

Tools: white latex, scissors, roll paper core 1 piece, cardboard (hardness greater than or equal to production: 1Use scissors to cut out a piece of cardboard on the cardboard that is larger than the roll core. 2.Glue the roll core to the cardboard with white latex.

Extension: 1Multiple roll cores of different heights can be glued side by side to the cardboard. 2.You can glue the roll paper core horizontally. 3.The core of the single-sided tape can be glued to the roll paper core that is placed horizontally. But to glue a piece of cardboard underneath the single-sided tape.

Don't know what you're going to make?