This short video and interactive assessment activity is designed to teach second graders about decomposing decimals into place values to tenths.

This short video and interactive assessment activity is designed to teach fifth graders about one-step conversions between hundreds, tens, and ones.

This short video and interactive assessment activity is designed to teach fourth graders about completing the expanded forms of numbers (place values to 1,000).

This short video and interactive assessment activity is designed to teach second graders about identifying digit values in numbers (numbers to 10,000).

This short video and interactive assessment activity is designed to teach third graders about describing patterns using letters.

This short video and interactive assessment activity is designed to teach fourth graders about describing patterns using letters.

Spanish translation of CK-12 Conceptos de Ciencias de la Vida - Grados 6-8 - en Español. This segment describes the destruction of habits. The following concepts are evident: participles used as adjectives, present perfect, impersonal se, use of mente to create adverbs. Vocabulary used includes scientific cognates and ecology.

This short video and interactive assessment activity is designed to give fourth graders an overview of length (english units).

This short video and interactive assessment activity is designed to teach second graders about using real maps (english lengths and distances).

This short video and interactive assessment activity is designed to teach fourth graders about using real maps (english lengths and distances).

This short video and interactive assessment activity is designed to teach third graders an overview of telling time to 1-minute intervals.

This short video and interactive assessment activity is designed to give fourth graders an overview of elapsed time.

This short video and interactive assessment activity is designed to teach second graders an overview of elapsed time.

This short video and interactive assessment activity is designed to teach fourth graders about elapsed time in a sequence of events - word problems.

This short video and interactive assessment activity is designed to teach fifth graders about determining duration time - one step with timeline.

This short video and interactive assessment activity is designed to teach fifth graders about determining less than or greater than values of a decimal.

This short video and interactive assessment activity is designed to teach third graders about determining unknown angles in parallelograms.

This short video and interactive assessment activity is designed to teach third graders about determining unknown angles in trapezoids.

This short video and interactive assessment activity is designed to teach fourth graders about determining unknown angles in trapezoids.

This short video and interactive assessment activity is designed to teach third graders about determining unknown angles within rectangles and squares.