This short video and interactive assessment activity is designed to teach fourth graders about identifyinging common factors.

This short video and interactive assessment activity is designed to teach fourth graders about identifyinging prime or composite numbers.

Unit 4: Dividing Fractions
Lesson 3: Interpreting Division Situations

In an earlier lesson, students were reminded of the connection between multiplication and division. They revisited the idea of division as a way to find a missing factor, which can either be the number of groups, or the size of one group.

In this lesson, students interpret division situations in story problems that involve equal-size groups. They draw diagrams and write division and multiplication equations to make sense of the relationship between known and unknown quantities (MP2).

This division task asks studnets to consider the conceptual understanding of something usually taught as a rote procedure. To be successful with this task, students must make sense of the procedure and how place value is represented and abbreviated within it.

This short video and interactive assessment activity is designed to teach fourth graders about listing common multiples.

This short video and interactive assessment activity is designed to teach fifth graders about multiple rounds of division - long division word problems.

This short video and interactive assessment activity is designed to teach fourth graders about dividing 3 and 4 digit numbers by 2 digit numbers.

This short video and interactive assessment activity is designed to teach fifth graders about dividing 3 and 4 digit numbers by 2 digit numbers.

This is the first of two fraction division tasks that use similar contexts to highlight the difference between the ŇNumber of Groups UnknownÓ a.k.a. ŇHow many groups?Ó (Variation 1) and ŇGroup Size UnknownÓ a.k.a. ŇHow many in each group?Ó (Variation 2) division problems.

This is the second of two fraction division tasks that use similar contexts to highlight the difference between the ŇNumber of Groups UnknownÓ a.k.a. ŇHow many groups?Ó (Variation 1) and ŇGroup Size UnknownÓ a.k.a. ŇHow many in each group?Ó (Variation 2) division problems.

Unit 4: Dividing Fractions
Lesson 2: Meanings of Division

In this lesson, students revisit the relationship between multiplication and division that they learned in prior grades. Specifically, students recall that we can think of multiplication as expressing the number of equal-size groups, and that we can find a product if we know the number of groups and the size of each group. They interpret division as a way of finding a missing factor, which can either be the number of groups, or the size of one group. They do so in the context of concrete situations and by using diagrams and equations to support their reasoning.

As they represent division situations with diagrams and equations and interpret division equations in context, students reason quantitatively and abstractly (MP2).

This is a spin on the traditional game of using numbers and operations to form an expression equal to a certain number. The game uses dominoes and multiple target numbers.

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

This short video and interactive assessment activity is designed to teach third graders about multiples - word problems.

This short video and interactive assessment activity is designed to teach fourth graders about multiples - word problems.

This short video and interactive assessment activity is designed to teach fourth graders about shortening multiplication expressions.

This short video and interactive assessment activity is designed to teach fourth graders about multiplying 2-digit by 2-digit numbers in columns.

This short video and interactive assessment activity is designed to teach fifth graders about multiplying 2-digit by 2-digit numbers in columns.

This short video and interactive assessment activity is designed to teach fourth graders about comparing using greater than, less than, and equal to.