This task gives students the opportunity to work with multiple representations of base-ten numbers. From Illustrative Mathematics.

Students determine whether a set of objects (up to 20) has an odd or even number of elements. From Illustrative Mathematics.

Students relate addition and subtraction problems to money and to situations related to saving money.  From Illustrative Mathematics.

The purpose of this task is to help students articulate their addition strategies. This task is most appropriate for students who have a solid understanding of coin values. From Illustrative Mathematics.

This task was designed to support students to estimate, measure, and compare lengths using standard units. To be successful with this task, students must have experience measuring lengths and be familiar with the units. From Illustrative Mathematics.

The purpose of this task is to give students practice identifying different types of polygons, namely triangles, quadrilaterals, pentagons, and hexagons. From Illustrative Mathematics.

The purpose of this task is to show the student that a rectangle can be partitioned into unit squares, and that there are a number of reasonable ways to count the resulting squares.  From Illustrative Mathematics.

The purpose of this task is for students to find combinations of coins that total the amounts given in a story. Since this task works primarily with coins, it can be given to students fairly early in learning about money and money combinations. Note, teachers will need a copy of this book (by Judith Viorst) to engage with this task. From Illustrative Mathematics.

This purpose of this task is to support students in developing an understanding of a place value strategy for adding numbers. From Illustrative Mathematics.