Video Gallery


Introduction to A Story of Units

The Common Core State Standards (CCSS) in mathematics contain challenging new expectations for students and teachers.…

Grades K-5 Fluency

Fluency activities help students build speed and accuracy with calculations.   Sample counting activities…

Place Value (Number Disks with Place Value Charts)

Number disks are non-proportional units used to further develop place value understanding.  Like money, the…

Array and Area Models

An array is an arrangement of a set of objects organized into equal groups in rows and columns.  Arrays help…

Numbers Through 10 (Number Towers, Number Path, Number Bond)

Number towers, also known as number stairs, are representations of quantity constructed by joining together interlocking…

Addition and Subtraction with Five Groups (Ten Frames)

A ten-frame is a 2 by 5 grid (array) used to develop an understanding of concepts such as 5-patterns, combinations…

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