In this lesson, students analyze similarities and differences among depictions of slavery in "The Adventures of Huckleberry Finn", Frederick Douglass' "Narrative", and nineteenth century photographs of slaves. Students formulate their analysis of the role of art and fiction, as they attempt to reliably reflect social ills, in a final essay.

The purpose of this task is to generate a classroom discussion that helps students synthesize what they have learned about multiplication in previous grades.

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

This task can be used to either build or assess initial understandings related to rational approximations of irrational numbers.

Students must calculate the volume of a cone in this real world task.

This task provides the opportunity for students to reason about graphs, slopes, and rates without having a scale on the axes or an equation to represent the graphs. Students who prefer to work with specific numbers can write in scales on the axes to help them get started.

The purpose of this task is to help develop students' understanding of addition of fractions; it is intended as an instructional task.

The purpose of the task is for students to compare signed numbers in a real-world context.

The focus of this task is on understanding that fractions, in an explicit context, are fractions of a specific whole. In this problem there are three different wholes: the medium pizza, the large pizza, and the two pizzas taken together.

This short video and interactive assessment activity is designed to teach third graders about comparing numbers using greater than and less than.

This short video and interactive assessment activity is designed to teach fourth graders about comparing values of two numbers.

Many students will not know that when comparing two quantities, the percent decrease between the larger and smaller value is not equal to the percent increase between the smaller and larger value. Students would benefit from exploring this phenomenon with a problem that uses smaller values before working on this one.

Students will really get into the swing of things as they analyze the text and film versions of Edgar Allan Poe's story, "The Pit and the Pendulum."

The purpose of this task is for students to compare a number and its product with other numbers that are greater than and less than one.

Using picture books as mentor texts, students learn effective strategies for organizing information that compares and contrasts. Students can then apply appropriate organizational strategies to their own papers.

This short video and interactive assessment activity is designed to teach second graders about comparing and writing decimal inequalities in word problems.

This short video and interactive assessment activity is designed to teach third graders about comparing the values of numbers to 1,000 - word problems.

The Comparison and Contrast Guide outlines the characteristics of the genre and provides direct instruction on the methods of organizing, gathering ideas, and writing comparison and contrast essays.

In this task students are required to compare numbers that are identified by word names and not just digits. The order of the numbers described in words are intentionally placed in a different order than their base-ten counterparts so that students need to think carefully about the value of the numbers.

In this task students are required to compare numbers that are identified by word names and not just digits. The order of the numbers described in words are intentionally placed in a different order than their base-ten counterparts so that students need to think carefully about the value of the numbers.