Didactic material "Visual geometry for large and small"

Didactic material “Visual geometry for large and small” - a manual for use in preparation for the OGE and the exam (basic level).

• to the development of fine motor skills; The development of spatial thinking;
• the formation of measurement skills, the calculation of the perimeters and areas of the polygons presented on the checkered lattice;
• the formation of mathematical literacy.

1 -6 classes
• place a color figure on a checkered platform so that all the vertices of the polygon coincide with the points of intersection of the straight lines on the site.
• Undo -painted rectangles so that the color figure is inside the highlighted rectangle.
• gray rectangular triangles and squares fill the remaining space of the checkered platform.
tasks for measurement and calculation of
• measure the sides of the polygon and calculate its perimeter.
• measure the sides of the rectangle and calculate its area. < /li>
• measure the sides of the triangle and calculate its perimeter and area.
7-9 grades
• place a color figure on a checkered platform so that all the vertices of the polygon coincide with the points of intersection of straight lines on the site.
• Ul -painted rectangles to arrange so that the color figure is inside the highlighted rectangle.
• measure the sides of the highlighted rectangle and find its area.
• gray rectangular triangles and squares fill the remaining space.
• Having completed the necessary measurements to find the areas of gray rectangular triangles and squares.
• fold all the areas of the calculated gray figures at the previous stage (step 5).
• Subtract from the area rectangle (step 3) of the area of ​​gray figures (step 6). The result is the desired area.

for children from 7 to 16 years old.