This Khan video is part 1 of Singapore Math, Grade 3, Unit 2 on the sum of and difference between 2 numbers. Khan draws bars to visualize numbers. He gives definition of sum and difference and gives several examples. This is a great resource to help ...students master this important skill. (14:26)[more]

This Khan video is part 8 of a progressive Singapore Math Unit 1 on number patterns with place value. He uses 6342, 6352, 6542 to show a progression of the hundreds place. This is a great resource to help students master this important skill. (15:39)

This video is part 7 of a progressive Singapore Math Unit 1 on place value, ordering numbers, number patterns. Khan uses the numbers 0, 4, 5 and ask students how many numbers they can make from these. He uses different colors to represent each place ...value group. This is a great resource to help students master this important skill. (13:05)[more]

This Khan video is part 6 on a progressive Singapore Math unit on ordering numbers and place value. He uses different colors to represent each place and gives lots of visuals when breaking apart and putting numbers together. Greater than and less tha...n are also discussed. This is a great resource to help students master this important skill. (15:43)[more]

This is part 5 of a progress Singapore Math lesson place value. He uses different colors to represent each place (ones, tens, hundreds, thousands). He discusses what each place in the number represents and uses lots of visuals. This is a great resour...ce to help students master this important skill. (13:07)[more]

Objectives: Read and write numbers less than 10,000. Relate each digit in a 4-digit number to its place value. This is a great lesson on grouping numbers into thousands and ten thousands. He uses different colors to represent the different groups. Th...is is super for our visual and auditory learner. This is a great resource to introduce and/or review this concept and help students master this important skill. (15:11)[more]

Objectives: Read and write numbers less than 10,000. Relate each 4-digit number to its place value. In this Khan video, students are introduced to grouping numbers by 10's hundreds, and thousands. He uses different colors for each group of tens, hund...reds, ones, etc. and uses these same colors as he puts his groups into a numeric problem. This is a great resource to help students master this important skill. (15:31)[more]

Objectives: Read and write numbers less than 10,000. Relate each digit in a 4-digit number to its place value. Compare and order numbers within 10,000. Students will learn to read, write, and draw numbers under 10, 000. He uses different colors to r...epresents each 11's place, 0's place, 100's place,and thousand's place. He uses the number 5998 and shows students how to break it apart. This is a great resource to introduce and/or review this concept and is excellent for visual learners. (13:17)[more]

This Khan video continues to discuss place value into the thousands. Each place is represented by a different color and will be helpful to our visual learner. He gives several examples of different ways of breaking apart large numbers and then puttin...g them back together. This is a great resource to help master this important mathematical skill. (12:23)[more]

Please make your comments on categories positive, and not just negative.

People work hard on educational categories, and we want to encourage them to make more!

Profanity (curse words), sexually suggestive remarks, and other such obviously inappropriate comments
will be deleted immediately, and are grounds for immediate expulsion. Remember, children use this website.

Personal criticism on project forums and in video content is not allowed and will be deleted immediately.
Any violations of this rule could result in expulsion from the project so please, no insults or other negative
personal remarks.

Very harshly-worded criticism of content will also be deleted promptly. Please use your vote to express your
harshest feelings. Repeated violations of this rule can result in expulsion. If you must criticize another
person's hard work, then be nice about it.

People work hard on educational categories, and we want to encourage them to make more!