Small production for 5th graders, not too difficult and not too easy, hurry up and come 10

1. Homemade badminton Preparation materials: one empty drink bottle, two foam fruit net covers, one rubber band, and one glass marble. Production process:

1.Take 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?

Homemade ashtrays.

Materials: canned Coca-Cola, scissors.

How to make: 1. Find a discarded can of Coca-Cola and neatly cut off the top lid.

2. Divide the rest into 6 parts evenly and cut it into six parts with scissors, don't cut it if you want to leave about 4 cm below, and then cut each part into 6 small strips, and don't cut the bottom either. This is a total of 36 strips. Every 6 pieces are braided into a petal-like flower.

3. Put the lid on again, and it becomes a beautiful ashtray.

Homemade coloured candles.

Materials: colored crayons, wax.

Directions:1 Find a discarded canned beverage bucket (e.g. 1 25 litre Coke bottle), neatly cut off the lid, and cut the wax into the bucket.

2 Put the bucket in hot water and stir the wax inside until it melts completely. It is best to use boiling water. However, ask your parents for help or be under the supervision of your parents.

3 Pour the melted liquid into a nicely shaped container (e.g. a heart-shaped box with small pieces of chocolate). Don't pour too much. As for the reason, look down. Of course, you first need to put the thread in the container as a wick.

4 The original wax cooled, and Ah poured the molten colored crayon liquid into it according to the method of dividing the face (the colored crayons came in handy at this time). In this way, the wax of different colors is added layer by layer, and the beautiful candle is made.

Let's start by explaining what "making" is. Making is to create something that doesn't exist in the first place, and buying it doesn't count.

What is a "small" production? First of all, the body size is small, building a house and building a car does not count; The second is that the structure is simple, and the size of the computing CPU chip is small enough, but that is obviously a "big" production; Finally, there is no need for complex processing equipment, which can generally be completed with household tools.

What is a small production of "technology"? Dig a piece of mud with your hands and knead it into a clay figure, this doesn't count. Because you don't use any tools, you can only be considered a work of art if you pinch it well, and it has nothing to do with technology.

As long as a tool more complex than a screwdriver is used in the crafting process, it should be counted in the technology production. Technology is divided into "high" and "low" technologies, and we only focus on low technology.

Unique wind chimes.

Materials: medicine bottles, electro-optical paper, cement, cardboard pieces, needles, threads.

How to make it: 1. You have to find a way to find 9 small medicine bottles, then fill them with water of various colors, and then thread a thread on each bottle cap;

2. Cut a disc with a piece of cardboard, thread it through the line in the middle, and then fix the line of the medicine bottle around the disc;

3. Use cement and electric paper to make a variety of good-looking patterns and stick them on the bottle! It's so pretty! It can also protect the environment. Eggshell piglets.

Materials: plasticine, eggshells.

Method: 1. Poke a small hole at each end of the egg, slowly pour out the egg white and egg yolk, and then let it dry.

2. Find some plasticine to pinch out the mouth, eyes, nose, ears, feet and tail of the piglet;

3. Glue the plasticine to the eggshells one by one.

Two-tone pressed bookmark.

Tools & Materials: White Cardboard, Color Cardboard, Self-adhesive Film, Tweezers, Bamboo Skewers, Latex, Flowers, etc.

1. On the white cardboard, the basic scope of the decal is formed by the leaves, and various flowers are interspersed with them, paying attention to the matching and coordination of colors.

2. Point a little white latex on the back of the flower and paste it on the cardboard. Latex is absolutely indispensable, and for most flowers and leaves, just a small dip on the back.

3. The layout and modeling are completed.

4. Tear off the backing paper of the self-adhesive film, fully cover the cardboard with the flowers, be careful not to wrinkle or deviate, press the edge of the flower with your fingers, and do not leave air.

5. Trim the excess adhesive film on the edges.

6. Paste double-sided tape on the back of the white cardboard.

7. Paste the white cardboard with the decals on the color bottom card.

Merge the paths and get (30-2) multiplied by 15=420

Directly calculate the area of the two trapezoids on both sides.

Solution: Set x pieces of each of these five kinds of RMB.

5x+10x+20x+50x+100x=7400185x=7400

x=405 yuan: 5x40=200 yuan;

10 yuan: 10x40=400

20 yuan: 20x40=800

50 yuan: 50x40=2000

100 yuan: 100x40=4000