Part of building solid number sense is understanding the laws and properties of multiplication and addition. Elementary school students can watch Sal multiply using the number one. He explains that multiplying any number by one equals...

This is the second in a series of three Khan Academy videos on rounding whole numbers. Students watch Sal Khan round the number 423,275 to the nearest thousand by looking at the number in the hundreds place. If it is five or higher, you...

Khan Academy helps learners grasp the concept of Place Value. Students will break down the number 4356 as four thousands plus three hundreds plus five tens plus six ones, and then label the number by place value. This video would be most...

This video on changing improper fractions to mixed numbers would nicely complement the Khan Academy video on writing mixed numbers as improper fractions. Sal first shows students how to convert improper fractions. Then, he uses drawings...

What is the square root of 100? Sal explains what the square root of 100 is, but he needs a little help explaining why. Note: This concept can be challenging for some. If you are showing this video to your class, it does not stand alone....

Rounding is an essential skill that must be used throughout the study of mathematics. This Khan Academy video is the first in a series of three. It shows how to round the number 24,259 to the nearest hundred, using a number line.

Sal explains that the most significant common factor of any number is the largest number divisible into both monomials and not necessarily the number with the most significant value. He breaks down two numbers into their prime factors as...

What is the probability that someone will draw the same lottery numbers two times in a row? Very small, but it can—and has—happened! Statisticians often work with very large or small numbers. The second lesson in a statistics playlist...

Looking at large numbers can intimidate many young mathematicians. Use Zoe's place value machine to help learners understand the meaning behind each digit in a whole number. After learning about the ones, tens, and hundreds places,...

Odd and even numbers are briefly defined in this clear and concise video. Examples of odd and even numbers are given throughout the video. This is a great video to hook your students into your lesson.

A goofy upper grader explains to viewers what binary code is and how it works to tell the computer what to do. He does a good job of explaining how the code works and what each 1 and 0 represent. Because he mentions base 2 this could be...

Your littlest learners will get a kick out of this math trick. The young lady in the video draws dots on each number and then counts them up. She correlates her method to images and explains all the numbers that can hold dots. This is a...

Charley and Professor Perez show us how to add numbers in a variety of ways. They use a number line to show how the various methods work. This clip shows learners that there are multiple ways to solve any addition problem. Intended for...

Provide your class with a developmentally sound way to view four-digit subtraction. Sal uses visual solid aids to show what each step in the subtraction process represents. Everyone will be able to see the mathematical process in action.

Sal provides a series of numbers for viewers to consider. They must attempt to identify the number pattern and predict the following two numbers in the sequence. The video contains various problems involving place value and pattern...

Have your class work through a series of exercises focused on number patterns with place value. Present each problem, allow your class to work through each one, and then show them what Sal did to solve each problem. Every problem is...

Learners explore this key concept through a review of reading and writing numbers up to 10,000. The instructor also leads a discussion of number progression. By using visual cues and brilliant colors, Sal makes it easy to understand how...

A video on Singapore Math uses a visual approach to understanding place value. It quizzes viewers on material learned about number sense. The instructor breaks down a large number, identifying the values in the thousands, hundreds, tens,...

A helpful video takes a deeper look at place value by identifying numbers of greater and lesser value using a visual approach. It would be a great way to solidify concepts for those who learn visually. Using bright colors and grouping...

Motivate your learners with this film. A series of horses appear one-by-one until reaching the number 20. This is a quick and easy way to review this concept.

Providing an introduction to the number one, this animated film features a young girl. It could be used as a quick anticipatory set in a preschool classroom before a lesson on counting.

Salty and Pierre search for the number two in this animated film. The number two is found in a pond with two swans. This is quite a funny video. Students will love the inspector wearing a tutu.

Salty and Pierre go on a search for number nine. This is a great way to kick off a lesson involving this number.

A little girl invites us to count by two's. Each image flips to reveal objects appearing by two's. The little girl counts to ten by two's, four different times.