Curated OER
Rational and Irrational Numbers
Irrational, rational, and terminating numbers are all covered in this math tutorial. The instructor uses a question from a math test to work through, showing how to compute and evaluate each answer to determine if the number given in...
Khan Academy
Singapore Math: Grade 3a, Unit 2 (Part 6)
Sal reinforces the concepts taught in the first video on Singapore's four-digit addition with a series of addition problems. The video would be an excellent homework assignment. Ask your class to view it at home and write a paragraph on...
Khan Academy
Singapore Math: Grade 3a, Unit 1 (Part 7)
Third graders use zero, four, and five to make as many three-digit numbers as possible. Sal explains that to make the largest number possible, one must put the largest number in the highest place. Each step and Sal's thought process is...
Curated OER
Ordering Fractions and Decimals (2)
To help students visualize how to order fractions and decimals this teacher uses a clever story. The animation used is very bright and the context of the story may be a great way to help students understand why convert a fraction into a...
Curated OER
Count In Binary
Eight-year-old James, demonstrates how he counts in binary. This video does not have an explanation of what binary is but could act as an example of the binary system.
Curated OER
Secret Trick: Math Division Long
Upper graders and middle schoolers will love this clip. They'll learn how to divide large numbers mentally. The narrator uses addition (and what appears to be magic) to divide a six-digit number by a single-digit number. Really cool...
Curated OER
Counting Numbers 1 - 10
The littlest learners will love counting along with this sing-song video. They can sing and count 10 fat sheep as they appear on the screen. A great way to reinforce counting skills, number sense, and number recognition in children ages...
Khan Academy
Singapore Math: Grade 3a, Unit 1 (Part 2)
As part of a series on numbers less than 10,000, a thorough presentation demonstrates how to visualize numbers in groups of a thousand. The instructor then describes how to read and write numbers less than 10,000.
Khan Academy
Singapore Math: Grade 3a, Unit 1 (Part 1)
Using a step-by-step approach, Sal from Kahn Academy visually describes what a group of 10, 100, and 1,000 means. It explores the value of numbers less than 10,000. The example is easy to understand. He puts marbles in a can, and the...
Khan Academy
Singapore Math: Grade 3a, Unit 2 (Part 4)
Use the Singapore math methods to work through simple problems. Visual representations of word problems allow viewers to start making predictions and estimating the answers. This is a good way for class members to use various methods to...