Mom Circle
See more and think more, and learn to draw inferences.
1. What are the sides of the object, and you can draw the shape of the corresponding surface.
2. When counting figures, it is recommended to count in the order or notation method that you are familiar with, so as not to miss or repeat the number.
3. When the number of figures in the combination graph, first count the number of single figures, then count the number of combined figures, and finally add each number.
4. The graphic angle exposed in Figure 1 is an acute angle, and the ** with an acute angle is optionally a triangle and a parallelogram.
The exposed corners of Figure 2 are right angles, and the alternate shapes with right angles are squares and rectangles.
5. Pay attention to the number of combined figures.
1. Practice brings true knowledge. It is recommended that parents prepare several identical and different squares, rectangles, triangles, and parallelograms for their children, and guide and deepen their children's mastery of the relevant knowledge of spelling ** shapes through grouping.
2 3. You can match the corresponding figure by first supplementing the picture and then comparing it.
4. (1) The cut figure has a right angle, an arc, and the characteristics of the alternative figure are selected.
5. We can help us understand and analyze by drawing auxiliary diagrams.
6. Fill the empty wall with a pen of other colors, and then count how many bricks have been filled.
8. Through the grouping, it was found that the spelling was in the shape of a field character, which met the requirements of the topic.
9. There are 3 divisions: divide the large rectangle into 4 small rectangles by transverse and vertical cutting; Divide the figure into 4 small triangles by cross-cutting and beveling; Divide the figure into 4 small triangles by vertical and oblique cuts.
10. First count the number of matches in the known diagram, and then analyze the number difference to find that several matches will be added for each additional triangle, and calculate the number of matches needed for the other number triangles in the group according to this law.