A lesson that I learned in math is , 3-5. 3-5 is about finding the square roots of a number. Some examples of perfect squares are 1, 4, 9, 16, and 49. Their square roots are 1, 2, 3, 4, and 7. You can use square roots in real life, to figure out the length of a square. If you were building something and the area is 36, the lengths of the square has to be 6×6. You can use it for picture frames too. If you have a picture that has the area of 16, you will need a 4×4 picture frame. You can use square roots to figure out the length of something, if you know what the area is. You can use square roots when you are drawing a picture. If you picture has to be a certain length, but you know the area, you can buy the right length by finding the square root. Square roots are an easy way to find a length of a square.