# Math | Round 2

Math

We still in the process of finishing the Primary Mathematics 5A. This round we learn about area and perimeter, base and height, geometry, and ratio.

Area/Base and height

In area lesson, we learn about how to find the area of the object. There some different sharp that we learn about such as square, rectangle, triangle, 3d abject and also mix shape. A four size shape is really easy to fi nd the area but the triangle is a little bit hard.  Base and height is also one of the elements that help to find the area of the triangle to so we do a little practice about base and height. We also learn about the formula or an algorithm to find the area of the triangle. = base*height/2

Perimeter

If you find the area of the object why don’t we find the perimeter too? We learn how to find the perimeter of four size sharp.

Ratio

For ratio, we usually do our exercise on our laptop. We find the ratio of a different thing. Our teacher gives us exercise on Google Classroom. We practice by finding the ratio of staff and student in our school, the school supplies and also find the ratio of food ingredient.