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

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

This short video and interactive assessment activity is designed to give fourth graders an overview of conversion of metric units of weight.

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 task provides an opportunity to work on the Standard for Mathematical Practice 3 Construct Viable Arguments and Critique the Reasoning of Others.

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.

While the task as written does not explicitly use the term "unit rate," most of the work students will do amounts to finding unit rates. A recipe context works especially well since there are so many different pair-wise ratios to consider.

Math I 22 Coordinate Geometry PROJECT. Coordinate Geometry Project Surveillance of the Village

This lesson will demonstrate how to use slope, midpoint, and distance formulas to determine from the coordinates of the vertices if a quadrilateral is a parallelogram in a coordinate plane. Students can check their understanding with an assessment. [12:13]

Coordinate geometry of rectangles is investigated in this video lesson. The tutorial demonstrates how to use the midpoint, distance, and slope formulas to determine if a quadrilateral is a rectangle on a coordinate plane. [17:26]

A brief refresher on the Cartesian plane includes how points are written in (x, y) format and oriented to the axes, and which directions are positive and negative. Then students learn about what it means for a relation to be a function and how to determine domain and range of a set of data points.

In this example students examine and critique an argument which implies that it is not cost effective to pay for an automobile with increased fuel efficiency. Using a few reasonable assumptions shows that some of the writer's quantitative claims are not very accurate.