Many different kinds of books fill the curriculum as fourth graders become sophisticated readers. They can use root words, context clues, and word endings to figure out new words. They'll spend long periods of time reading and writing on their own.
Fourth graders read, write, compare, add, subtract, multiply, and divide with very large whole numbers. They do more equations with fractions and decimals and learn about prime numbers. They solve problems about factors and multiples and explore geometry formulas for determining perimeter and area and for measuring angles.
In science, fourth graders begin to compare complex systems in a complex manner. This can mean looking at changes in the Earth over long periods of time, observing the water cycle, or understanding the interactions between organisms and their environment.
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