Patent Application
20220080768
The instant application relates to an arithmetic tool with a utility model template of a double-sided portable dry erase board which currently is utilized as a teaching tool.
A dry erase board is a writing plane made of a white sheet metal that has non-pollutants and convenient to use. It is a writing tool that can be repeatedly erased. However, most dry erase boards are single-sided plain whiteboards, whereas the instant device may be utilized as a multipurpose teaching tool for different operations such as basic math and arithmetic practice. A lightweight double-sided dry erase board with multifunctional and interchangeable utility model templates that is easy to carry can provide great benefits as a versatile teaching tool.
The instant device, method and accompanying series of apparatuses, as illustrated herein, are clearly not anticipated, rendered obvious, or even present in any of the prior art mechanisms, either alone or in any combination thereof.
The primary object of the instant device is to provide a utility model double-sided portable dry erase board that is lightweight, has unlimited uses and is easy to carry. It is designed for convenient portability, which may cooperate with the memo edition of the body of books for easy storage and practical use.
Another object of the instant device is to provide educational and frequent arithmetic practice when used for addition, subtraction and multiplication utilizing both vertical and horizontal uses. The instant device has a simple pedagogic structure and strong practicality, designed to work with grades K-1 curriculum and beyond.
The instant device is an inexpensive alternative to paper that can be reused when resolving problems after problems. It also offers a great way for students to participate their lessons individually or in small groups. Parents will be encouraged to have this product to help children with their problem-solving tasks.
The instant device maintains the safety standards for its use and distribution knowing that it will not be scratched or cut with sharp corners or edges, nor is it harmful to the health and well-being of any person.
In the drawings:
The detailed description set forth below in connection with the appended drawings is intended as a description of several preferred embodiments of the apparatus of a multipurpose double-sided portable dry erase board.
The following description particularly relates to the utilization of the instant device as a teaching tool. A preferred embodiment 10 of a double-sided portable dry erase board depicted in
The imprinted utility model template 1 in
As shown in
For addition operations, for example, if a user would like to use the board to calculate 137 plus 935, he may mark the 3-digit numbers within the graphic circles of rows 2 and 3, and then apply the addition rule. Start with the first column with digit 7 and 5 and mark 2 as the first result inside the first circle from the right in the first row. The remainder is digit 1. A user may mark it in the dotted upper circle of the second column. The remainder will be used for the next operation if used. For the second column, the user may match the numbers 1 plus 3 plus 3 equals 7 and write down digit 7 in the second circle of the first row. In the third column, digits 1 plus 9 equals 10 and the user may write down digit 10 and use it to finish the third and fourth circles of the first row for a total of 1072.
For subtractions, operations up to 4 digits are allowed when using the utility model double-sided dry erase portable board. For example, for the subtraction of 65 minor 25, this operation uses two rows. A user may mark the digits in the circles of the second and the third rows. The first column shows 5 minus 5 equals 0. The user may mark down 0 (zero) as the first result inside the first graphic circle from right to left in the first row. The second column shows digits 6 minus 2 equals 4. Then, the user may mark down in the second circle of the first row to obtain the result of 40.
For multiplications, the second imprinted utility model template is utilized in horizontal directions and up to five digits may be used. Any residue can be written in the imprinted blank symmetric dotted circles if needed. As shown in
In addition, there are eight vertical red lines as arrows dividing each column. The assignment of colored circles as green, yellow, pink, and blue within the utility model dry erase board depends on the number of digits in both the multiplier and the multiplying, which is designed to guide and give structure in each step in this mathematical process.
For example, to solve a multiplication of one hundred and twenty-two {122} by twenty-five {25}, a user may appoint the seventh row as multiplicand, write down one hundred and twenty-two {122}. Then, use the sixth row as multiplier and write down the digits twenty-five {25} with Digit five on the green circle of the first column and digit two on the yellow circle of the second column. The digit five {5} times two {2} equals ten {10}. The user may appoint the digit zero {0} on the green circle of the first column, over row five, appoint the digit one {1} as the remainder, in the first blank symmetry dotted circle of row 8 over the second column. However, the user must also add the number one {1}, appoint in the first blank symmetry dotted circle of row 8 over the second column. From there, the digit ten {10} plus digit one {1} equal eleven {11}, appoint the digit one {1} on the green circle of the second column, over row five, appoint the digit one {1} as the remainder, in the second blank symmetry dotted circle of row 8 over the third column.
Next, the digit five {5} times one {1} equals five {5}, where the number one {1} is appointed in the second blank symmetry dotted circle of row 8 over the third column. Then, the digit five {5} plus digit one {1} equals six {6}, where the digit six {6} is appointed on the green circle of the third column over row five. Then, the digit two {2} times two {2} equals four {4}, where digit four {4} is appointed inside of the yellow circle over row four {4} of the second column. Next, the digit two {2} times two {2} equals four {4}, where digit four {4} is appointed inside of the yellow circle over row four {4} of the third column. Next, digit two {2} times one {1} equals four {2}, where digit four {2} is appointed inside of the yellow circle over row four {4} of the fourth column.
Finally, the user may appoint Three Thousand Fifty {3050} as the result by following the staggered order as shown in
The instant device of the double-sided portable dry erase board also includes a dry erase ink pen 11 for writing, which comprises a dry erase pen body 4, a pen cap 5, and a wiper 6 that is disposed on the pen cap 5 as shown in
With the above scheme, the dry erase pen body is used for writing, and the cap is arranged to facilitate the cover to reduce the loss of ink, and the wiper is disposed on the cap to facilitate carrying, and at the same time, the numbers written on the double-sided portable dry erase board can be erased.
The instant device of the double-sided dry erase portable board further includes an eraser 12, which comprises a groove 7 and a wiping sponge 8 as shown in
