This short video and interactive assessment activity is designed to teach third graders about word problems that compare values.

This short video and interactive assessment activity is designed to teach second graders about comparing with two-step addition and subtraction.

This short video and interactive assessment activity is designed to teach third graders about dual place value.

This short video and interactive assessment activity is designed to teach fourth graders about dual place value.

This short video and interactive assessment activity is designed to teach second graders about using a place value chart to compare and write decimal inequalities.

This short video and interactive assessment activity is designed to give fourth graders an overview of comparing decimals.

This short video and interactive assessment activity is designed to teach second graders an overview of comparing decimals.

This short video and interactive assessment activity is designed to teach fifth graders about comparing the product of decimals without calculation.

This short video and interactive assessment activity is designed to teach fourth graders about comparing decimals with whole numbers using inequalities.

The purpose of this task is for students to compare fractions using common numerators and common denominators and to recognize equivalent fractions.

In this interactive activity adapted from Anneberg Learner’s Teaching Math Grades 3–5, compare fractions on number lines to determine which class of students wins bubble-gum-blowing contests.

This short video and interactive assessment activity is designed to teach fifth graders about comparing fractions using lcm - word problems.

This short video and interactive assessment activity is designed to teach fifth graders about comparing fractions using a fraction bar illustration.

This task is meant to address a common error that students make, namely, that they represent fractions with different wholes when they need to compare them. This task is meant to generate classroom discussion related to comparing fractions. Particularly important is that students understand that when you compare fractions, you implicitly always have the same whole.

The purpose of this task is to foster a classroom discussion that will highlight the difference between multiplicative and additive reasoning.

The purpose of this task is to assess studentsŐ understanding of multiplicative and additive reasoning.

The purpose of this task is to generate a classroom discussion that helps students synthesize what they have learned about multiplication in previous grades.

The purpose of this task is to help develop students' understanding of addition of fractions; it is intended as an instructional task.

The focus of this task is on understanding that fractions, in an explicit context, are fractions of a specific whole. In this problem there are three different wholes: the medium pizza, the large pizza, and the two pizzas taken together.