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

In this activity students read a list of laws regulating Africans and African Americans and a servant's indenture contract from colonial New York. Then students find evidence in the primary sources to support a series of statements about the differences between slaves and servants in the period. This activity includes scaffolds and vocabulary support for students with literacy challenges.

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.

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.

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.

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.

The Compassion Project has both digital and off-line components covering: defining empathy and compassion, practicing mindfulness and growth mindset, identifying emotions, and performing acts of kindness

When most people think of the Civil Rights Movement in America, they think of Martin Luther King, Jr. Delivering his "I Have a Dream" speech on the steps of the Lincoln Memorial in 1963. But "the Movement" achieved its greatest results due to the competing strategies and agendas of diverse individuals.

This course aims to develop negotiation skills by active participation in a variety of negotiation settings, and a series of integrative bargaining cases between two and more than two parties over multiple issues. Ethical dilemmas in negotiation are discussed at various times throughout the course.

This short video and interactive assessment activity is designed to teach fourth graders about finding and completing the number patterns.

This short video and interactive assessment activity is designed to teach third graders about finding and completing the number patterns.