Who can help me explain how to make a pupil's invention? Please elaborate! Please answer as soon as possible. Thank you! ! ! Hurry up! !

Wrap beer bottle caps with rags and sew them together according to their own shapes, which can be made into sundries boxes or coasters; According to your requirements, put unused straws into curtains and partitions; Make simple furniture, such as small bookcases, bedside tables, CD racks, etc. Packaging boxes for refrigerators, televisions and other large electrical appliances. As long as you have the heart in life, pay attention everywhere. ...

The simplest: make a pen container! ! Do you have any unused glass cups at home? Or a broken teacup, try it, as long as it is heavy enough to hold a pen. Find a beautiful cloth, or colored paper, and make a dress for the cup. Kraft paper is also good. Wrap it in a cup, measure it well, cut a suitable piece and have more joints. ...

The homemade Kongming Lantern (1) was cut into pieces of paper, and the specifications are shown in the figure. One side of the first paper and one side of the second paper are glued together, and then the third and fourth sheets are glued together in the same order until a ball with a diameter of about 60 cm is assembled. ....

This is a simple matchbox microscope with single lens and high magnification. It is very convenient to carry and use. The materials are also easy to find: a matchbox shell, a small glass bead (which can be replaced by the small glass bead at the front end of the concentrating electric bead), two match boxes, a small piece of glass, a small glass mirror, and adhesive tape and glue.

The manufacturing process is also very simple. First, the inner box of the matchbox is hollowed out, the horizontal bar at one end is cut off, and a small hole with the same size as glass beads is stuck in the middle of the other end. After the glass beads are put in, cover them with a piece of white paper with a small hole with the same diameter as the glass beads. The first step is completed. Step 2: First, punch a small long hole about one centimeter in the position of the inner box of another match facing the lens, stick a piece of glass on the hole and stick it firmly with adhesive tape, so that the stage is completed. The lens holder only needs to cut a square hole on one side of the trademark as the entrance. The fourth and final step is to install the mirror: stick the adhesive tape on the back of the mirror, fold it back 90 degrees, and stick it on the lower end of the inner box of the matchbox to make the mirror tilt.

When in use, the observed object is placed on the glass on the stage, and then the lens holder is inserted so that the small window faces the light source. By adjusting the height, you can clearly see the magnified object.

This project involves a direction indicator, which is an improved compass. The compass can show the direction, but it only points to the north and south. In order to distinguish other directions accurately, people set a dial under the compass. When using, adjust (rotate) the dial so that the "South" in the scale is consistent with the compass, and then the dial will display all directions correctly. This kind of compass displays accurately, but there are some problems: the dial needs to be adjusted and it is inconvenient to use.

The purpose of this project is to provide a direction indicator, which can automatically and accurately display any direction without adjusting between compass and dial.

The purpose of this project is to make dial and star pointer with thin materials (such as paper and plastic) and connect them with compass. The "south" of the dial is consistent with the compass, which drives the dial and the star pointer when it swings. Compass always points the way, dial and star pointer always show all directions correctly.

Because this direction indicator automatically and correctly displays all directions, there is no need to adjust the compass and dial, which is much more convenient to use.

The specific structure of this project includes a shell, a compass connected to the dial and a star pointer.