This short video and interactive assessment activity is designed to teach fourth graders about converting inches to compound units.

This short video and interactive assessment activity is designed to teach fifth graders about converting inches to feet.

This short video and interactive assessment activity is designed to teach fifth graders about converting inches to yards.

This short video and interactive assessment activity is designed to teach fifth graders about converting kilograms and grams into grams.

This short video and interactive assessment activity is designed to teach fifth graders about converting miles to feet.

This short video and interactive assessment activity is designed to teach fourth graders about converting years into weeks.

This short video and interactive assessment activity is designed to teach fourth graders about converting years to days.

This short video and interactive assessment activity is designed to give fourth graders an overview of comparison of weights (english units).

In this Cyberchase video segment, Matt uses subtraction to help Digit figure out how much time he has left in a cooking contest with Hacker.

This challenging problem and brainteaser gives first graders an opportunity to compose and decompose squares.

An idea or solution is considered creative if it is original, useful, and surprising. However, depending on who actually judges these three criteria, we must distinguish personal “little-c creativity” from consensual “Big-C Creativity.” In any case, psychologists who investigate creativity most often adopt one of three perspectives. First, they can ask how creators think, and thus focus on the cognitive processes behind creativity. Second, they can ask who is creative, and hence investigate the personal characteristics of highly creative people. Third, they can ask about the social context, and, thereby, examine the environments that influence creativity. Although psychologists have made major advances in the study of creativity, many exciting and important questions remain to be answered.

In this lesson, students will use a square foot gardening planting chart (provided) to calculate the number of crops they can plant within a specific area.

This short video and interactive assessment activity is designed to teach third graders an overview of capacity (english units).

In this lesson, students measure and compare the rate of a falling object (a penny) at different heights to learn about statistical error.

Students will convert vegetable bed measurements from feet to metric units using decimals.

The sixth podcast in this series examines the law of demand. Those who love candy bars will find this lesson especially easy to digest. A demand curve is simply defined, as are the sorts of changes that might affect that curve—all in less than seven minutes.

Student teams design and create LEGO® structures to house and protect temperature sensors. They leave their structures in undisturbed locations for a week, and regularly check and chart the temperatures. This activity engages students in the design and analysis aspects of engineering.

This short video and interactive assessment activity is designed to give fourth graders an overview of length (english units).

This short video and interactive assessment activity is designed to teach fourth graders about using real maps (english lengths and distances).

This short video and interactive assessment activity is designed to teach second graders about using real maps (english lengths and distances).