This short video and interactive assessment activity is designed to teach fourth graders about converting dollars and coins into dollars in words.

This short video and interactive assessment activity is designed to teach second graders about the fewest number of coins and bills to equal a given amount.

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

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

Standard 8.NS.1 requires students to "convert a decimal expansion which repeats eventually into a rational number." Despite this choice of wording, the numbers in this task are rational numbers regardless of choice of representation. For example, 0.333 and 1/3 are two different ways of representing the same number.

This short video and interactive assessment activity is designed to teach second graders about converting dollars into cents.

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

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.

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

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 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 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).

An interactive applet and associated web page that demonstrate the concept of a convex polygon - one where all interior angle are less than 180 degrees. The applet shows an irregular convex polygon initially. The user can drag any vertex, change the number of sides in the range 3..99, and make it regular or irregular. When the polygon is convex, the polygon is so flagged. It is shown that regular polygons are always convex. The goal is to show through experimentation what the concept of convexity really means. Applet can be enlarged to full screen size for use with a classroom projector. This resource is a component of the Math Open Reference Interactive Geometry textbook project at http://www.mathopenref.com.

Use the "Slinky Test" to get students to start thinking about sentence length and variety.
This resource provides a video to explain the strategy and a number of supports to help you teach students when to use sentences of varied length to improve their writing.

In this work of fiction, Rooster and his eager friends set out to make strawberry shortcake, a recipe from Little Red Hen's cookbook. Rooster is glad to have help, but none of his friends know how to cook, so Rooster forges ahead to teach the helpers the basics of cooking and baking, with very funny results