Khan Academy: Intro to Addition and Subtraction: Basic Addition

Hop your way through a mathematical equation with your first grade class as they learn the idea of moving up and down the number line. Adding and subtracting like little frogs is an engaging and clever way to teach/reinforce this concept.

Fact families are an excellent way to connect math operations for beginners to addition and subtraction. Use the examples here to review this concept before scholars try these on their own. For each, they examine two related number...

After watching a brief video on addition and subtraction, young mathematicians are put to the test. Including 12 problems, individuals solve word problems to find the least number, total amount, and difference of numbers. 

The math monster is at it again, this time stealing all the cars and drivers that were to take part in the cart race. If their addition and subtraction facts are up to the challenge, young mathematicians can win the drivers' freedom...

Learn what it means to add. The examples used in this video are 1+1 and 2+3. Includes a video, transcript, and question and answer section. [3:10]

Sal talks about what it means to subtract using objects. Includes a video, transcript, and question and answer section. [3:37]

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...

Sal finds out how many bananas we need to add to 3 bananas to make 10 bananas. Includes a video, transcript, and question and answer section. [1:59]

Using a ten frame, Sal shows how to add two numbers to make 10. Includes a video, transcript, and question and answer section. [1:53]

This video covers a short review of addition, followed by basic subtraction concepts. Practice problems are available. [8:32]