In the second grade mathematics, we usually use various figures such as circles, triangles and squares to represent different numerical values. These graphs are called counter graphs or bead graphs. Figures such as circles, squares and triangles can be used to represent numbers, which is an intuitive representation, allowing children to better understand and remember the shape and size of numbers.
For example, in a numeric table, a circle can represent the value 1, a triangle can represent the value 3, a square can represent the value 4, and so on. The specific values of these shapes depend on the settings in the theme.
For example, let's set a scene: in a numerical table, a circle represents the value 1, a triangle represents the value 3, and a square represents the value 4. Then we can use these numbers to represent some numbers. For example, if we want to represent the number 7, then we can draw three triangles under a circle (because 1+3+3=7).
Under this setting, if we want to calculate some problems of addition and subtraction, we can express these calculations by moving these figures in combination. For example, we have to calculate 8+4=? Then we can draw four triangles under a square in the numerical table (because 4+4=8) to get the result.
There is no fixed rule for the numerical value represented by each graph. In different topics, the same graph may represent different values. For example, in one numeric table, a circle can represent the value 1, while in another numeric table, it can represent the value 5. So when doing the problem, you need to know the settings in the problem first, and know what the numerical value of each graph represents.
The significance of learning mathematical graphics;
1, intuitive understanding: Mathematical graphics can transform abstract mathematical concepts and principles into concrete graphic images, help students better understand mathematical concepts and principles, and improve their intuitive imagination and analytical ability. For example, when learning geometry, students can better understand the meaning and application of abstract geometric concepts and principles by drawing pictures.
2. Cultivate spatial thinking ability: Mathematical graphics can help students cultivate spatial thinking ability. By observing and analyzing graphics, they can better grasp the characteristics and properties of geometric shapes, thus improving their spatial thinking ability and imagination. For example, when studying solid geometry, observing and analyzing the shapes and characteristics of various geometric bodies can help students better grasp the geometric relations and calculation methods in three-dimensional space.
3. Application practice: Mathematical graphics have a wide range of applications in solving practical problems. For example, architecture, architectural design needs mathematical knowledge such as geometric figures and algebraic equations; In economics, data analysis needs mathematical knowledge such as charts and statistical charts; In physics, the research in the fields of mechanics and kinematics needs mathematical knowledge such as mathematical models and algorithms.