This module takes number sense and place value understanding from 2nd and 3rd grade a step further. Students start by noticing patterns when bundling and unbundling groups of 10s, 100s, and 1,000s, and they conclude by estimating and finding precise answers to addition and subtraction problems using the standard algorithm. 

This module applies place value understanding to metric units of length, mass, and capacity. Students will move between larger and smaller units to solve problems, just like they bundled and unbundled on the place value chart. 

This module teaches students the lifelong skills of multiplying and dividing big numbers. Students learn strategies that will allow them to multiply and divide on paper and in their heads. 

This module introduces a new language—geometry—and provides new opportunities for visualization. Students first learn about lines, rays, and angles. They then measure and classify those angles and use this knowledge to construct two-dimensional shapes. 

This module teaches students how to manipulate fractions. Students compare fractions, evaluate equivalence, and learn that the same methods they used for whole number operations can be used to add, subtract, and multiply fractions. 

This module extends students understanding of the base ten system by first exploring equivalence between fractions and decimals. This understanding extends to comparing decimals and adding money. 

This final module provides students with an opportunity to synthesize what they’ve learned in 4th grade and apply it in complex situations with conversions.