Khan Academy
Khan Academy: Arithmetic and Pre Algebra: Level 2 Addition
A video explaining addition of a two-digit number and a one-digit number using the addition algorithm, objects and number lines. Practice problems are available. [9:47]
Khan Academy
Khan Academy: Arithmetic and Pre Algebra: Basic Addition
This video introduces basic addition concepts using objects and number lines to represent and add numbers. Practice problems are available. [7:42]
Khan Academy
Khan Academy: Addition and Subtraction Within 10
Sal solves addition and subtraction equations with number 10 or less. Includes a video, transcript, and question and answer section.
Khan Academy
Khan Academy: Addition Word Problems Within 10
Sal solves word problems by adding small numbers of objects (numbers 10 or less). Includes a video, transcript, and question and answer section. [1:41]
Khan Academy
Khan Academy: Subtraction Word Problems Within 10
Sal solves a word problem about sharks by subtracting numbers less than 10. Includes a video, transcript, and question and answer section. [1:02]
Khan Academy
Khan Academy: Number Grid
Sal goes through all the numbers from 0 to 100 and shows some interesting patterns. Includes a video, transcript, and question and answer section. [4:58]
Khan Academy
Khan Academy: Comparing Numbers on the Number Line
Sal uses a number line to compare numbers less than or equal to 10. Includes a video, transcript, and question and answer section. [1:30]
Khan Academy
Khan Academy: Recognizing Shapes
Learn the names of different shapes and how to recognize them. [6:08]
Khan Academy
Khan Academy: Addition Word Problems Within 10
The video discusses examples of addition word problems that add small numbers (numbers 10 or less).
Khan Academy
Khan Academy: Subtraction Word Problems Within 10
The video describes how to solve word problems by subtracting small numbers (numbers 10 or less).
Khan Academy
Khan Academy: Getting to 10 by Filling Boxes
The video shows how to add two numbers to make 10. He uses 3 + ___ = 10 and 6 + ___ = 10 as examples.
Khan Academy
Khan Academy: Comparing Numbers on the Number Line
The video uses a number line to compare numbers less than or equal to 10.
Khan Academy
Khan Academy: Teens as Sums With 10
The video looks at the 1 in each teen number and thinks about what it really means as representing 10, and the pattern of the teen numbers as ten plus some other number.
PBS
Pbs: Odd Squad: It's Picture Day!
It's Picture Day at Odd Squad, and Otto needs to use an equation to calculate how long he needs to wait in line.
Khan Academy
Khan Academy: Add and Subtract: Pieces of Fruit
Demonstrates how to add and subtract pieces of fruit using the numbers 5 and 3. [2:17]