Addition of Two and Three Digit Whole Numbers

Developing fluency with basic addition and subtraction is fundamental to the success of all young mathematicians. This four-day lesson series begins with learners using ten-frames and hundreds charts to recognize patterns when adding and...

Have fun while building the number sense of young mathematicians with this list of ten-frame learning games. From developing cardinality and counting skills to learning place value and basic addition strategies, ten-frames are excellent...

Add some visual support to your elementary geometry lessons with this set of printable shape cards. From triangles and squares to octagons and nanogons, this simple resource can be used in countless ways to develop children's knowledge...

Change up the classroom atmosphere with this interdisciplinary resource. Following along with the children's book Mr. Slaptail's Curious Contraption, these math worksheets provide practice with a wide range of topics including simple...

When learning to add large numbers, having a solid understanding of place value is essential. In the second lesson in this series, young mathematicians see how expanded notation can make addition of three- and four-digit numbers much...

Prior experience with addition of fractions guides young mathematicians as they learn how to multiply fractions by whole numbers. The first video in this two-part series outlines this process with clear explanations and examples....

Zoe needs to back up her music collection, but do her friends have enough space on their computers to help? Find out as you teach your class how to add two- and three-digit numbers with regrouping. Place value is emphasized as both the...

Understanding the inverse relationship between addition and subtraction is essential for developing fluency in young mathematicians. Zoe and RJ explain how three numbers can form fact families that make two addition and two subtraction...

Visual models are invaluable tools when teaching about fractions. Follow along as the instructor works through two examples, providing clear verbal and visual explanations of the steps for multiplying fractions by whole numbers. Young...

Learning how to visualize is an important step in the growth of young mathematicians. The first video in this two-part series helps learners develop this ability by using visual models to explain multiplication of fractions by whole...