In fourth grade, students focus most on using ... of these lines or angles to categorize or group (classify) two-dimensional shapes or figures such as rectangles, parallelograms, trapezoids ...

The area of a compound shape can be calculated by adding the areas of the shapes it is made from. Break the shape into two squares and a rectangle. Calculate the area of each shape. \(4 \times 4 ...

It’s around fourth grade that many youngsters become discouraged by math and begin to think of it as a subject they’re just not good at. Be aware of this and try to prevent your child from ...