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.

This short video and interactive assessment activity is designed to teach second graders about converting coins - two units.

This short video and interactive assessment activity is designed to teach second graders about writing prices of items.

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.

Students practice counting sequences by standing in a circle and counting one by one.

Students who work on this task will benefit in seeing that given a quantity, there is often more than one way to represent it, which is a precursor to understanding the concept of equivalent expressions.

This challenging problem and brainteaser gives first graders an opportunity to compose and decompose squares.

This is an instructional task related to deepening place-value concepts. The important piece of knowledge upon which students need to draw is that 10 tens is 1 hundred.

Students practice crossing from one family to the next in counting forward with this concentration game.

Students will be using a hands-on approach to learning about length, capacity, and weight. This lesson contains a detailed plan, slides containing notes and problems, and a video tutorial.

Students expand their conception of what a “number” is as they are introduced to an entirely new category of number, decimals, which they learn to convert, compare, and add in simple cases.

Students practice data collection by gathering data within the classroom on common causes of allergies. They examine and interpret data charts on national trends in allergies.

This task helps students understand the relationship between digit placement and the value of a number.

This task requires students to think of dimes and pennies as fractions of dollars.

This short video and interactive assessment activity is designed to teach fifth graders about dividing decimals by multiples of 10.

This short video and interactive assessment activity is designed to give fifth graders an overview of decimal division.

This short video and interactive assessment activity is designed to teach third graders about dividing by 1 digit numbers with illustrations.

This short video and interactive assessment activity is designed to teach fifth graders about dividing 2 digits by 2 digits with a remainder.

This short video and interactive assessment activity is designed to teach fourth graders about dividing 2 digits by 2 digits with a remainder.