How to make an oral calculation turntable for first grade elementary school students

The production of oral arithmetic turntable for first-grade elementary school students: the utility model patent.

The technology discloses an oral calculation turntable, comprising a large disc, a small disc, a card and a base (card box), the hole on the large disc corresponds to the small disc and engraves 0 to 9 numbers at equal distances along a circle of the large disc, the small disc has a small circular hole displaying the number of the large disc, the bottom of the small disc is magnetically adsorbed on the base card box, the card can be placed in the base card box, the large disc can be rotated, and the card is made up of a number card and an operation symbol card, Described operation symbol card is positioned in the small round hole of described small disc and the middle of number card, and described operation symbol card is made up of addition disk, subtraction disk, multiplication disk and division disk. The easy-to-use oral calculation turntable, flexible operation, large disc can be rotated as needed, provide addition within 10, subtraction, multiplication and division oral arithmetic, the card can be stored in the base card box, the small disc and the base card box can be detached and placed, making the teaching aids compact and exquisite, the card is not easy to lose, easy to carry.

Simple: Cut out a large circle and a small circle from a piece of paper, divide it into several squares ("meter") equally, and write the numbers. Drop a hole in the center of the circle, overlap it (the small one on the top, the big one on the bottom), and connect it with something.

Several large yogurt boxes are arranged in a staggered row, and they are fixed with tape to make a large turntable that can be rolled. The child loves to play very much.

Tools Materials Scissors Paper Gel Pen Fulcrum (toothpicks, etc.) Prepare the materials and tools first.

Then use scissors to cut the cardboard into a circle and cut out a turning needle.

Then use scissors to poke a hole of the same size in the middle of the turntable and at one end of the turner.

Then use a gel stroke to go on the carousel item.

Then snap the fulcrum into the middle of the turntable and put the pin to complete the turntable.

1. Find two pieces of cardboard of different colors, which are required to be harder and not too soft.

2. Draw two circles of different sizes and cut them out, preferably with a radius of three centimeters in two months.

3. Draw two different circle points into nine parts, and divide them into nine points by multiplication table.

4. Write one to nine on two circles of different sizes.

5. Staple the two of them together with thumbtacks and erasers.

6. This is done.

When turning, find the product of the multiplication of two adjacent numbers (one red and one blue) and use it to practice the mantra.

1.Prepare round tools, brushes, glue and other materials.

2.Draw a circle and cut off the outer edges.

3.Then press and hold the cap to draw a small circle, and on the side of the circle, draw an arrow.

4.Draw on a blank piece of paper with some items that need to be selected when you rotate.

5.Cut out all the colored animals and glue them to the edges of the big circle with a glue stick.

6.Prepare the arrows and the bottom bracket.

7.Then nail it together.

The material, the size of the turntable, and the material of the support are all casual. The most important thing is the hinge material. Get a better bearing. It is best to use wood and styrofoam for the turntable. The size comes by wood.

Actually, there is no need to turn. Go buy a bigger dartboard. Different regions have different problems. Find a large display board to fix, and if it is not high enough, it will be raised at the bottom.

1. Select 2 cardboards and draw a circle, one large and one small.

2. Poke out a hole in the center of the two circles to make the two holes coincide.

3. Decorative circles. The large circle can be decorated at will, and the small circle can be divided into equal parts or according to needs.

4. Take a straw, bend the retractable part, insert it into the hole, connect the 2 circles, and tape the bent part of the straw to the back of the large circle to fix it.

5. Use the remaining cardboard to make a handle, decorate it in any shape, and then stick it on the back of the big circle.

6. Of course, you also need to draw an indicator arrow in the part where the big circle is more than the small circle, and finally you only need to write or paste the required content into the equal parts.

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You might consider using a box, cutting it into circles, sticking cardboard on it, and then dividing it into equal parts, and passing the focal point in the middle with a toothpick.

To make a turntable, first draw the turntable and pointer, add the animation effect of the gyroscopic to the pointer, set the parameters, take a look at the final effect, and the turntable is ready.

1. Entrance settings.

Set keywords (you can participate in activities through keywords); ** Info interface.

2. Basic settings.

Limit the number of participants: Set the number of participants; Unlimited number of participants; 2 options.

Event start and end date settings: the deadline for prize redemption (the deadline is not less than the end date of the event);

Consultation** (convenient for users to consult merchants when the event is in progress, and can realize the one-click dialing function);

3. Prizes are set.

Prize name: limited to 6 characters, 6 grids of the wheel set up to 5 kinds of prizes; 8 squares to set up to 7 kinds of prizes;

Prize settings: Prizes can be selected with valid coupons or custom prizes;

Number of prizes and winning rate: The number of prizes cannot be 0, the winning rate can be 0, and it must be an integer. The sum of the winning rates must be equal to 100%;

4. Notification of winning the lottery.

Winning Lottery Unwinning Prompt Effect: 3 of each can be selected at will;

5. Check statistics.

You can view the information of the winning user and confirm that the user has received the prize, and the merchant can verify it through the merchant background and change the use status of the prize. Mobile users can directly view the prize center of the current event;

No, unless you're good at the language.

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What does the turntable mean, do you want to use your mobile phone as a signal source, and connect the power amplifier behind.