Space to play or pause, M to mute, left and right arrows to seek, up and down arrows for volume. Hi superstars. My name's Ms. White and I'm so looking forward to being on this learning adventure with ...

Ask the publishers to restore access to 500,000+ books. An icon used to represent a menu that can be toggled by interacting with this icon. A line drawing of the Internet Archive headquarters building ...

Addition and subtraction with regrouping using different strategies to solve. In this lesson, students go over addition and subtraction with regrouping using different strategies to solve. Today we ...

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

The present paper describes the success, the methods (mental, informal written, standard algorithm) and the strategies of informal written arithmetic to be observed when 300 elementary students worked ...

Mental maths is when you do calculations in your head instead of writing them down. Sometimes, it's just as quick to do calculations in your head as it is to write down every step. You can add and ...

Subtraction problems of the type M - S = ? can be solved with various mental calculation strategies. We investigated fourth- to sixth-graders' use of the subtraction by addition strategy, first by ...