This short video and interactive assessment activity is designed to teach third graders about comparing cups and quarts by formula.

This short video and interactive assessment activity is designed to teach second graders about comparing cups and quarts by pictures.

The goal of this task is to compare three quantities using the notion of multiplication as scaling. Students will recognize (5.NF.B.5) that the Burj Khalifa is taller than the Eiffel tower and that the Eiffel Tower is shorter than the Willis Tower using the size of the given multiplicative scalars.

This lesson unit is intended to help teachers assess how well students are able to interpret exponential and linear functions and in particular to identify and help students who have the following difficulties: translating between descriptive, algebraic and tabular data, and graphical representation of the functions; recognizing how, and why, a quantity changes per unit intervale; and to achieve these goals students work on simple and compound interest problems.

This short video and interactive assessment activity is designed to teach second graders about comparing pints and quarts by pictures.

This short video and interactive assessment activity is designed to teach third graders about comparing quarts and pints by formula.

The CyberSquad proves that the area of Hacker's land is equal to the area of Judge Trudy's land in this video segment from Cyberchase.

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

This short video and interactive assessment activity is designed to teach fourth graders about compound unit multiplication - word problems.

Accuracy of measurement in navigation depends very much on the situation. If a sailor's target is an island 200 km wide, sailing off center by 10 or 20 km is not a major problem. But, if the island were only 1 km wide, it would be missed if off just the smallest bit. Many of the measurements made while navigating involve angles, and a small error in the angle can translate to a much larger error in position when traveling long distances.

This short video and interactive assessment activity is designed to teach second graders about conversion word problems (english units).

This short video and interactive assessment activity is designed to teach fourth graders about conversion word problems (english units).

This short video and interactive assessment activity is designed to teach fifth graders about conversion of ounces into pounds and ounces.

This short video and interactive assessment activity is designed to give fifth graders an overview of conversion between units of weight (english units).

This short video and interactive assessment activity is designed to give fifth graders an overview of conversion between cups, pints, and quarts.

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

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

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

This short video and interactive assessment activity is designed to teach fifth graders about converting large units to small units (english units).

This short video and interactive assessment activity is designed to teach fourth graders about converting large units to small units (english units).