A large collection of teacher resources for teaching and reviewing patterns and number sequences. There are games, PowerPoint presentations, worksheets, pdf files, Word files, and smartboard activities available for download at several...

This lesson is about counting by fours from AAAmath.com. There are separate sections for learning, practice, playing a game, and exploring more about skip counting.

Students must choose the written number word that comes after the numeral given in this online game from AAAmath.com. This lesson offers the opportunity to learn, practice, play a game, and explore the concept.

Students practice counting backwards on this interactive lesson from AAAmath.com. This lesson offers the opportunity to learn, practice, play a game, and explore the concept of counting down.

Matt's third table arrangement helps fit all 20 workers at five tables in this video segment from Cyberchase.

See how the existence of infinity depends on the context in which it is used. Offers a look at the concept of infinity from different view points.