Space to play or pause, M to mute, left and right arrows to seek, up and down arrows for volume. Hi, I'm Miss James and I'm so happy to be your teacher today. For this lesson, you will need 10 objects ...

Here you will find a video about addition and subtraction. Watch this, and then test your knowledge with a short quiz before exploring the rest of the collection. This section contains videos from our ...

The National Council of Teachers of Mathematics is a public voice of mathematics education, providing vision, leadership, and professional development to support teachers in ensuring mathematics ...