This task asks students to study some patterns in a small addition table. From Illustrative Mathematics.

This task poses a series of questions teachers might use to instruct or assess understanding of rounding to the nearest ten and hundred. From Illustrative Mathematics.

This task poses a multi-step problem to 3rd graders who have  some expertise with fractions already. This task can be used to assess students' current understanding of fractions smaller and larger than one. This task also lists other tasks that lead up to this task, if you're beginning to teach fractions or reteaching some concepts. From Illustrative Mathematics.

Students explore area, recognize different ways of representing fractions with area, and understand why fractions are equivalent in special cases.  From Illustrative Mathematics.

 This instructional task is best used when students are first working with the distributive property.  From Illustrative Mathematics.

The purpose of this task is to help students differentiate between a polygon and the region inside of a polygon. From Illustrative Mathematics.

The purpose of this task is to support students' reasoning based on place value to multiply a single digit number by a multiple of 10. If used in an instructional setting, students might benefit from having access to base-ten blocks. Students should also be encouraged to use a number line marked with tens. From Illustrative Mathematics.

Students solve problems involving the four operations,and draw scaled graphs with the task. From Illustrative Mathematics.

Students solve a two-step word problem and represent an unknown quantity with a variable in this task. From Illustrative Mathematics.

The purpose of this task is for students to work on elapsed-time questions. This task includes three different elapsed time situations: end-time unknown, elapsed time unknown, and start-time unknown. From Illustrative Mathematics.