Space to play or pause, M to mute, left and right arrows to seek, up and down arrows for volume. Hello, lovely learners. My name's Miss White and I'm so excited to teach you today. For this lesson you ...

The common-core math standards require that students learn the standard algorithm for multi-digit adding and subtracting—you know, the process in which you line the numbers up vertically to add or ...

An alternating treatments design was used to compare the effects of baseline, interspersed brief problems, and interspersed brief problems plus token reinforcement on students' endurance while ...

Space to play or pause, M to mute, left and right arrows to seek, up and down arrows for volume. Good morning friends. My name's Miss White and I'm so excited that you've joined me so that we can ...