What a great way to present multiple-digit addition! Sal adds the numbers 2803 and 1443. He draws a chart representing each of the four place values from the problem and then draws "place value buckets” to represent what each number...

Place value is a challenging concept to grasp. In this video, the instructor links visual representations to numbers to make the concept more understandable. He uses different colors for thousands, hundreds, tens, and ones. He also uses...

If you need to extend your four-digit addition example problems, this video is perfect. Sal provides a variety of practice problems firmly based on the place value system. Each problem is wonderfully explained using multiple colors and a...

Ancient Egyptian's had a fantastic number system and your class gets to use it to practice basic math skills! They are presented with several examples of Egyptian numbers which they use to complete several addition and subtraction...

This video is great preparation for order of operations and linear equations. There are two videos on the distributive property of multiplication. The first one showed why distribution works. This one shows the process in a clear and...

Elementary schoolers observe Sal evaluate the expression 4(8+3) and then use the distributive property to solve it. Using different colors to make the process clear, Sal explains not only how to use the distributive property but, with...

Using a number line can provide students with a concrete representation of the value various numbers hold. Sal plots 6 different numbers on a number line. He includes whole, decimal, and negative numbers.

In this video, Salty and Pierre, French inspectors, search for the number five. They look in a doghouse and encounter the number and the dog. This film could be used to kick off a lesson on numbers from zero to five.

Third graders explore place value to the ten thousands place. This incredibly thorough, 24-page lesson has learners construct, order, and compare numbers to 9,999. This three-day lesson includes reteaching and extension activities...

Having a good number sense is key to understanding place value. This video clearly explains the place values that comprise a decimal number. It is a very straight forward presentation and would be appropriate for grades 3, 4, or 5. Sal...

Word problems are a great way to help learners visualize and understand why fractions are so important. Sal determines what fraction of 3/4 cup of oats he will need if he is making 1/2 a recipe. He uses drawings to demonstrate why one...

The number 9 is the star of this video. The number is shown using a pile of rocks. It's just a short video, but it could be used to introduce the number in preschool or kindergarten class.

A real astronaut in a space ship counts down from 10. When he reaches 10, a rocket blasts off. This would be a wonderful way to practice counting down. It's motivating!

Eight is great in this video. The Count sings a song about the number 8 and counts objects. He counts eight skates on a crate.

Using music and great visuals, this video would be an interesting and motivating way to review the number 12. It could be used in a pre-school or kindergarten classroom.

The number 8 is featured in this film with street dancers. Stepping and stomping, these dancers count from one to eight. You could have children clap and stomp while counting in the classroom to appeal to those who learn through movement.

A two-headed monster tries unsuccessfully to count to 14 using cows, chickens, and more. Eventually, the character adds all of the animals together to reach 14. This is a great way to introduce this number, and highlight addition skills.

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...

Understanding place value is a basic mathematics skill. This Khan Academy video shows students how to write the number 14,897 in the expanded form. He explains that the 7 in the ones place is the same as 7x1, the 9 in the tens place is...

Viewing this Khan Academy video helps with grasping the concept of Place Value. Learners write the word six hundred forty-five million, five hundred eight-four thousand, four hundred sixty-two in standard form, using multiplication as a...

The divisibility rules are invaluable tools to possess. Sal teaches students to recognize divisibility using the divisibility rules. He explains why 380 is divisible by some numbers and not by others. Tip: Create a handout on the...

Knowing mathematic terminology is vital for building a functional academic vocabulary. In this video, Sal defines number sets and the terms; natural numbers, whole numbers, integers, rational numbers, irrational numbers, and real...

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 1. He explains that 1x any number equals that number. He...

This is the second in a series of 3 Khan Academy videos on rounding whole numbers. Students watch Sal Khan round the number 423,275 to the nearest thousand by looking to the number in the hundreds place. If it is 5 or higher, you round...