This short video and interactive assessment activity is designed to teach third graders about dividing by 2.

This short video and interactive assessment activity is designed to teach third graders about dividing by 3.

This short video and interactive assessment activity is designed to teach third graders about dividing by 4.

This short video and interactive assessment activity is designed to teach third graders about dividing by 5.

This short video and interactive assessment activity is designed to teach third graders about dividing by 6.

This short video and interactive assessment activity is designed to teach third graders about dividing by 7.

This short video and interactive assessment activity is designed to teach fourth graders about dividing by 8.

This short video and interactive assessment activity is designed to teach third graders about dividing by 8.

This short video and interactive assessment activity is designed to teach fifth graders about dividing by 9.

This short video and interactive assessment activity is designed to teach third graders about dividing by 9.

This short video and interactive assessment activity is designed to teach fourth graders about number patterns based on the multiplication table.

This short video and interactive assessment activity is designed to teach third graders about division terms.

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

This short video and interactive assessment activity is designed to teach fourth graders about dividing to find the time.

This short video and interactive assessment activity is designed to teach fifth graders about division of lengths (metric units).

This short video and interactive assessment activity is designed to give fifth graders an overview of speed based problems.

This short video and interactive assessment activity is designed to give fourth graders an overview of speed based problems.

CK-12 Earth Science For High School covers the study of Earth - its minerals and energy resources, processes inside and on its surface, its past, water, weather and climate, the environment and human actions, and astronomy.

CK-12 Earth Science For Middle School covers the study of Earth - its minerals and energy resources, processes inside and on its surface, its past, water, weather and climate, the environment and human actions, and astronomy.

This short video and interactive assessment activity is designed to teach third graders about beginning, ending, and elapsed time with clocks - word problems.