This short video and interactive assessment activity is designed to teach fourth graders about using both division and multiplication - word problems.

This short video and interactive assessment activity is designed to teach third graders about finding the amount of change - multiplication.

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

The purpose of this task is to have students add mixed numbers with like denominators. This task illustrates the different kinds of solution approaches students might take to such a task.

Students will learn and practice the correct order of operations. The lesson will begin with a motivational group-art activity. Students will then take notes and do a "pass the paper" activity for practice. This will be followed by students creating their own problems.

During this activity students will learn how to estimate population size using two techniques, density extrapolation and the mark-recapture method.

This short video and interactive assessment activity is designed to teach third graders about prime factorization.

Learn about the dynamic relationships between a jet engine's heat loss, surface area, and volume in this video adapted from Annenberg Learner's Learning Math: Patterns, Functions, and Algebra.

In this lesson designed to enhance literacy skills, students learn how to use fractions to interpret the nutritional information contained on food labels.

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

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

This short video and interactive assessment activity is designed to teach third graders an overview of schedules and timelines.

In this video segment from Cyberchase, the CyberSquad learns how to read a thermometer as they try to keep their chocolate sculpture from melting.

This task helps students understand that when you multiply by a number you always get a bigger number.

This short video and interactive assessment activity is designed to teach second graders about representing numbers in expanded form i.

This short video and interactive assessment activity is designed to teach second graders about representing numbers in expanded form II.

This short video and interactive assessment activity is designed to teach fourth graders about identifyinging the value of digits based on place value.

This short video and interactive assessment activity is designed to teach third graders about identifying the value of digits based on place value.

This short video and interactive assessment activity is designed to teach fourth graders about recognizing place value of digits in numbers ii.

This activity will help students to connect the numeral (symbol) to the number (quantity in a set).