LOWER SCHOOL
GRADE 4 MATHEMATICS
16
The fourth-grade curriculum introduces more advanced work with decimals, fractions, algebraic reasoning and basic geometry, while also stressing mastery of skills that will enable students to thrive in later math courses: proficiency with the four operations; quick recall of math facts; and facility with estimating, rounding and judging the reasonableness of an answer. Working with numbers into the millions, students routinely practice mentally calculating sums, differences, products and quotients. The result is mathematical fluency and a solid foundation in numeracy that serves students well in later math courses. Work with fractions is extended to include conversion between improper fractions and mixed numbers, conversion between decimals and fractions, and adding and subtracting improper fractions and fractions with different denominators. Students work with decimals in the four operations. Other skills include constructing and interpreting graphs and tables as well as using the data in problem solving; working with factors and multiples; finding the mean, median, mode and range of a data set; estimating and measuring angles with a protractor; and solving problems involving the perimeter of squares, rectangles, and composite figures.