You can add or subtract numbers in lots of different ways. You can use number lines, number bonds, fact families, 10 squares and counters, or even just writing the numbers down. Sometimes it is faster ...

Students practice addition and subtraction problems without regrouping. In this lesson, students practice addition and subtraction problems without regrouping using base-10 block manipulatives and ...

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 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 ...

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 ...

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 ...