The purpose of this task is to foster a classroom discussion that will highlight the difference between multiplicative and additive reasoning.
The purpose of this task is to assess studentsŐ understanding of multiplicative and additive reasoning.
These word problems involve multiplicative comparison.
The purpose of this task is to generate a classroom discussion that helps students synthesize what they have learned about multiplication in previous grades.
The purpose of this task is to help develop students' understanding of addition of fractions; it is intended as an instructional task.
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.
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.
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.
This short video and interactive assessment activity is designed to teach fourth graders about completion of number patterns.
This short video and interactive assessment activity is designed to teach fourth graders about completing a decimal place value chart up to hundredths.
This short video and interactive assessment activity is designed to teach fourth graders about completing a decimal place value chart to tenths.
This 4-minute video lesson introduces Khan's series on complex numbers.
This single minute video lesson looks at how to add complex numbers.