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 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.

The purpose of this task is for students to compare a number and its product with other numbers that are greater than and less than one.

Students will use the decomposition of a compost pile to visualize fractions as parts of a whole.

The purpose of this task is to have students think about the meaning of multiplying a number by a fraction, and to use this understanding of fraction multiplication to make sense of the commutative property of multiplication in the case of fractions.

This short video and interactive assessment activity is designed to teach fifth graders about the conversion of decimals to fractions.

This short video and interactive assessment activity is designed to teach fifth graders about the conversion of mixed numbers into decimals.

This short video and interactive assessment activity is designed to teach fifth graders about converting decimals into simplified mixed numbers.

This task gives students word problems with a given a set of a specified size and a specified number of subsets. The questions ask the student to find out the size of each of the subsets.

In these lessons students will explore the paintings of Horace Pippin and Wayne Thiebaud and the mobiles of Alexander Calder to discover and practice math and visual art concepts. Background and biographical information about the work of art and artist, guided looking with class discussion, and activities with worksheets using mathematical formulas and studio art provide the framework for each lesson.

In this Cyberchase video segment, Shari Spotter gets help from the CyberSquad in doubling a recipe for crumpets.

This short video and interactive assessment activity is designed to teach fifth graders about determining less than or greater than values of a decimal.

This task requires students to think of dimes and pennies as fractions of dollars.

This short video and interactive assessment activity is designed to teach fifth graders about dividing fractions by fractions.

This short video and interactive assessment activity is designed to teach fifth graders about dividing whole numbers by fractions.