During Grade 4, instruction should emphasize the development of the mathematical processes as the vehicle for mastering the grade-level content. Instruction should focus on these critical areas:

• Developing understanding and fluency with multi-digit multiplication through visual models and operational properties. 

• Developing understanding of division involving multi-digit dividends using place value models. 

• Extending understanding of fraction equivalence and operations with fractions by composing and decomposing, reasoning about relative size, and applying properties of operations. 

• Classifying two-dimensional shapes according to their attributes such as the presence or absence of lines or angles. 

• Developing understanding of an angle as a turn in a circle and justify the classification of angles as acute, obtuse, and right.